using citations in an essay

How to Write an Academic Essay with References and Citations

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If you're wondering how to write an academic essay with references, look no further. In this article, we'll discuss how to use in-text citations and references, including how to cite a website, how to cite a book, and how to cite a Tweet, according to various style guides.

You might need to cite sources when writing a paper that references other sources. For example, when writing an essay, you may use information from other works, such as books, articles, or websites. You must then inform readers where this information came from. Failure to do so, even accidentally, is plagiarism—passing off another person's work as your own.

You can avoid plagiarism and show readers where to find information by using citations and references. 

Citations tell readers where a piece of information came from. They take the form of footnotes, endnotes, or parenthetical elements, depending on your style guide. In-text citations are usually placed at the end of a sentence containing the relevant information. 

A reference list , bibliography, or works cited list at the end of a text provides additional details about these cited sources. This list includes enough publication information allowing readers to look up these sources themselves.

Referencing is important for more than simply avoiding plagiarism. Referring to a trustworthy source shows that the information is reliable. Referring to reliable information can also support your major points and back up your argument. 

Learning how to write an academic essay with references and how to use in-text citations will allow you to cite authors who have made similar arguments. This helps show that your argument is objective and not entirely based on personal biases.

How Do You Determine Which Style Guide to Use?

Often, a professor will assign a style guide. The purpose of a style guide is to provide writers with formatting instructions. If your professor has not assigned a style guide, they should still be able to recommend one. 

If you are entirely free to choose, pick one that aligns with your field (for example, APA is frequently used for scientific writing). 

Some of the most common style guides are as follows:

AP style for journalism

Chicago style for publishing

APA style for scholarly writing (commonly used in scientific fields)

MLA style for scholarly citations (commonly used in English literature fields)

Some journals have their own style guides, so if you plan to publish, check which guide your target journal uses. You can do this by locating your target journal's website and searching for author guidelines.

How Do You Pick Your Sources?

When learning how to write an academic essay with references, you must identify reliable sources that support your argument. 

As you read, think critically and evaluate sources for:

Objectivity

Keep detailed notes on the sources so that you can easily find them again, if needed.

Tip: Record these notes in the format of your style guide—your reference list will then be ready to go.

How to Use In-Text Citations in MLA

An in-text citation in MLA includes the author's last name and the relevant page number: 

(Author 123)

How to Cite a Website in MLA

Here's how to cite a website in MLA:

Author's last name, First name. "Title of page."

Website. Website Publisher, date. Web. Date

retrieved. <URL>

With information from a real website, this looks like:

Morris, Nancy. "How to Cite a Tweet in APA,

Chicago, and MLA." Scribendi. Scribendi

Inc., n.d. Web. 22 Dec. 2021.

<https://www.scribendi.com/academy/articles/how_to_cite_a_website.en.html>

How Do You Cite a Tweet in MLA ?

MLA uses the full text of a short Tweet (under 140 characters) as its title. Longer Tweets can be shortened using ellipses. 

MLA Tweet references should be formatted as follows:

@twitterhandle (Author Name). "Text of Tweet." Twitter, Date Month, Year, time of

publication, URL.

With information from an actual Tweet, this looks like:

@neiltyson (Neil deGrasse Tyson). "You can't use reason to convince anyone out of an

argument that they didn't use reason to get into." Twitter, 29 Sept. 2020, 10:15 p.m.,

https://twitter.com/neiltyson/status/1311127369785192449 .

How to Cite a Book in MLA

Here's how to cite a book in MLA:

Author's last name, First name. Book Title. Publisher, Year.

With publication information from a real book, this looks like:

Montgomery, L.M. Rainbow Valley. Frederick A. Stokes Company, 1919.

How to Cite a Chapter in a Book in MLA

Author's last name, First name. "Title of Chapter." Book Title , edited by Editor Name,

Publisher, Year, pp. page range.

With publication information from an actual book, this looks like:

Ezell, Margaret J.M. "The Social Author: Manuscript Culture, Writers, and Readers." The

Broadview Reader in Book History , edited by Michelle Levy and Tom Mole, Broadview

Press, 2015,pp. 375–394.

How to  Cite a Paraphrase in MLA

You can cite a paraphrase in MLA exactly the same way as you would cite a direct quotation. 

Make sure to include the author's name (either in the text or in the parenthetical citation) and the relevant page number.

How to Use In-Text Citations in APA

In APA, in-text citations include the author's last name and the year of publication; a page number is included only if a direct quotation is used: 

(Author, 2021, p. 123)

How to Cite a Website in APA

Here's how to cite a website in APA:

Author, A. A., & Author, B. B. (Year, Month. date of publication). Title of page. https://URL

Morris, N. (n.d.). How to cite a Tweet in APA, Chicago, and MLA. 

https://www.scribendi.com/academy/articles/how_to_cite_a_website.en.html       

Tip: Learn more about how to write an academic essay with  references to websites .

How Do You  Cite a Tweet in APA ?

APA refers to Tweets using their first 20 words. 

Tweet references should be formatted as follows:

Author, A. A. [@twitterhandle). (Year, Month. date of publication). First 20 words of the

Tweet. [Tweet] Twitter. URL

When we input information from a real Tweet, this looks like:

deGrasse Tyson, N. [@neiltyson]. (2020, Sept. 29). You can't use reason to convince anyone

out of an argument that they didn't use reason to get into. [Tweet] Twitter.

https://twitter.com/neiltyson/status/1311127369785192449

How to Cite a Book in APA

Here's how to cite a book in APA:   

Author, A. A. (Year). Book title. Publisher.

For a real book, this looks like:

Montgomery, L. M. (1919). Rainbow valley.

Frederick A. Stokes Company.

How to Cite a Chapter in a Book in APA

Author, A. A. (Year). Chapter title. In Editor Name (Ed.), Book Title (pp. page range).

With information from a real book, this looks like:

Ezell, M. J. M. (2014). The social author: Manuscript culture, writers, and readers. In

Michelle Levy and Tom Mole (Eds.), The Broadview Reader in Book History (pp. 375–

394). Broadview Press.

Knowing how to cite a book and how to cite a chapter in a book correctly will take you a long way in creating an effective reference list.

How to Cite a Paraphrase in APA

You can cite a paraphrase in APA the same way as you would cite a direct quotation, including the author's name and year of publication. 

In APA, you may also choose to pinpoint the page from which the information is taken.

Referencing is an essential part of academic integrity. Learning how to write an academic essay with references and how to use in-text citations shows readers that you did your research and helps them locate your sources.

Learning how to cite a website, how to cite a book, and how to cite a paraphrase can also help you avoid plagiarism —an academic offense with serious consequences for your education or professional reputation.

Scribendi can help format your citations or review your whole paper with our Academic Editing services .

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Hire an expert academic editor , or get a free sample, about the author.

Scribendi's in-house editors work with writers from all over the globe to perfect their writing. They know that no piece of writing is complete without a professional edit, and they love to see a good piece of writing transformed into a great one. Scribendi's in-house editors are unrivaled in both experience and education, having collectively edited millions of words and obtained numerous degrees. They love consuming caffeinated beverages, reading books of various genres, and relaxing in quiet, dimly lit spaces.

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• In-Text Citations

In APA style, you use parenthetical citations within the text of your paper to credit your sources, to show how recently your sources were published, and to refer your reader to a more detailed citation of the source in the reference list at the end of your paper. You should use parenthetical citations when you paraphrase, quote, or make any reference to another author's work. A parenthetical citation in APA style includes the author's last name as well as the year in which the work was published, with a comma between them. If you are referring directly to a specific page in the source, you should also include the page number in your parenthetical citation. APA requires you to cite page numbers when you are quoting directly from the source. If you are paraphrasing, which is more common in the social sciences, you generally do not need to include a page number. If you have questions about whether you should include page numbers when citing in APA, you should consult your instructor.

If you mention the author's name and/or the year of publication in the sentence preceding the citation, you do not need to include them in the parenthetical citation. When you name the author in the sentence, you should include the publication year in parentheses right after the author’s name—do not wait until the end of the sentence to provide that information.

When you include a parenthetical citation at the end of a sentence, the punctuation for your sentence appears after the citation.

Citing author and date in a parenthetical citation

When you don’t mention either the author or the date of publication in your sentence, you should include both the author and the year, separated by a comma, in the parenthetical citation. 

Colleges and universities need to create policies that foster inclusion for low-income students (Jack, 2019).         

Citing when author’s name is mentioned in body of paper

When you mention the author’s name in your sentence, the year of publication should immediately follow the author’s name.

Anthony Jack’s (2019) study of low-income students on an elite college campus revealed that these schools are often unprepared to support the students they admit.

Jack (2019) studied the ways low-income students experience elite college campuses.

Citing page numbers

When you cite a direct quote from the source or paraphrase a specific point from the source, you should include the page number in the parenthetical citation at the end of the sentence. When you refer to a specific page or pages of the text, first list the year of publication and then list "p." followed by the page number or "pp." followed by the range of pages. If you refer to a specific chapter, indicate that chapter after the year.              

The author contends that “higher education in America is highly unequal and disturbingly stratified” (Jack, 2019, p. 4).

Jack (2019) contends that “higher education in America is highly unequal and disturbingly stratified” (p. 4).

Citing sources with more than one author

When you cite a source that has two authors, you should separate their names with an ampersand in the parenthetical citation.

The authors designed a study to determine if social belonging can be encouraged among college students (Walton & Cohen, 2011). 

If a work has three or more authors , you should only include the first author's name followed by et al. ( Et al. is the shortened form of the Latin et alia , which means “and others.”)

The implementation of postpartum contraceptive programs is both costly and time consuming (Ling et al., 2020).

Attributing a point to more than one source  

To attribute a point or idea to multiple sources, list them in one parenthetical citation, ordered alphabetically by author and separated by semicolons. Works by the same author should be ordered chronologically, from oldest to most recent, with the publication dates separated by commas.

Students who possess cultural capital, measured by proxies like involvement in literature, art, and classical music, tend to perform better in school (Bourdieu & Passeron, 1977; Dumais, 2002; Orr, 2003).

Citing multiple works by the same author 

If your reference list includes multiple works by the same author in the same year, identify them in your parenthetical citations and in your reference list by a lowercase letter after the year, assigning each letter in alphabetical order by the title of the work. When establishing the alphabetical order of works in your reference list, do not count the words "A" or "The" when they appear as the first word in a title.

One union-endorsed candidate publicly disagreed with the teachers' union on a number of issues (Borsuk, 1999a).

Citing multiple authors with the same last name        

If your reference list includes sources by multiple authors with the same last name, list each author's initials before their last name, even when the works were published in different years.

The question of whether a computer can be considered an author has been asked for longer than we might expect (B. Sobel, 2017).

Citing when no author is listed           

To refer to a work that is listed in your reference list by title rather than by author, cite the title or the first few words of the title.

The New York Times painted a bleak picture of the climate crisis (“Climate Change Is Not Negotiable,” 2022).

Citing when no date is listed

If the work you are citing has no date listed, you should put “n.d.” for “no date” in the parenthetical citation.

Writing research papers is challenging (Lam, n.d.). 

Citing a specific part of a source that is not a page number

To refer to a specific part of a source other than page number, add that after the author-date part of your citation. If it is not clear whether you are referring to a chapter, a paragraph, a time stamp, or a slide number, or other labeled part of a source, you should indicate the part you are referring to (chapter, para., etc.).

In the Stranger Things official trailer, the audience knows that something unusual is going to happen from the moment the boys get on their bicycles to ride off into the night (Duffer & Duffer, 0:16).

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APA Formatting and Style Guide (7th Edition)

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In-Text Citations

Resources on using in-text citations in APA style

Reference List

Resources on writing an APA style reference list, including citation formats

Other APA Resources

Penn State University Libraries

Apa quick citation guide.

• In-text Citation
• Citing Generative AI
• Citing Web Pages and Social Media
• Citing Articles
• Citing Books
• Citing Business Reports
• Other Formats
• APA Style Quiz

Using In-text Citation

Include an in-text citation when you refer to, summarize, paraphrase, or quote from another source. For every in-text citation in your paper, there must be a corresponding entry in your reference list.

APA in-text citation style uses the author's last name and the year of publication, for example: (Field, 2005). For direct quotations, include the page number as well, for example: (Field, 2005, p. 14). For sources such as websites and e-books that have no page numbers , use a paragraph number, for example: (Field, 2005, para. 1). More information on direct quotation of sources without pagination is given on the APA Style and Grammar Guidelines web page.

Example paragraph with in-text citation

A few researchers in the linguistics field have developed training programs designed to improve native speakers' ability to understand accented speech (Derwing et al., 2002; Thomas, 2004). Their training techniques are based on the research described above indicating that comprehension improves with exposure to non-native speech.   Derwing et al. (2002) conducted their training with students preparing to be social workers, but note that other professionals who work with non-native speakers could benefit from a similar program.

Derwing, T. M., Rossiter, M. J., & Munro, M. J. (2002). Teaching native speakers to listen to foreign-accented speech.  Journal of Multilingual and Multicultural Development , 23 (4), 245-259.

Thomas, H. K. (2004).  Training strategies for improving listeners' comprehension of foreign-accented speech  (Doctoral dissertation). University of Colorado, Boulder.

Citing Web Pages In Text

Cite web pages in text as you would any other source, using the author and date if known. Keep in mind that the author may be an organization rather than a person. For sources with no author, use the title in place of an author.

For sources with no date use n.d. (for no date) in place of the year: (Smith, n.d.). For more information on citations for sources with no date or other missing information see the page on missing reference information on the APA Style and Grammar Guidelines web page. 

Below are examples of using in-text citation with web pages.

Web page with author:

In-text citation

Heavy social media use can be linked to depression and other mental disorders in teens (Asmelash, 2019).

Reference entry

Asmelash, L. (2019, August 14). Social media use may harm teens' mental health by disrupting positive activities, study says . CNN. https://www.cnn.com/2019/08/13/health/social-media-mental-health-trnd/index.html

Web page with organizational author:

More than 300 million people worldwide are affected by depression (World Health Organization, 2018).

World Health Organization. (2018, March 22).  Depression . https://www.who.int/en/news-room/fact-sheets/detail/depression

Web page with no date:

Establishing regular routines, such as exercise, can help survivors of disasters recover from trauma (American Psychological Association [APA], n.d.).

American Psychological Association. (n.d.). Recovering emotionally from disaste r. http://www.apa.org/helpcenter/recovering-disasters.aspx

General Guidelines

In-text references should immediately follow the title, word, or phrase to which they are directly relevant, rather than appearing at the end of long clauses or sentences. In-text references should always precede punctuation marks. Below are examples of using in-text citation.

Author's name in parentheses:

One study found that the most important element in comprehending non-native speech is familiarity with the topic (Gass & Varonis, 1984).

Author's name part of narrative:

Gass and Varonis (1984) found that the most important element in comprehending non-native speech is familiarity with the topic.

Group as author: First citation: (American Psychological Association [APA], 2015) Subsequent citation: (APA, 2015)

Multiple works: (separate each work with semi-colons)

Research shows that listening to a particular accent improves comprehension of accented speech in general (Gass & Varonis, 1984; Krech Thomas, 2004).

Direct quote: (include page number and place quotation marks around the direct quote)

One study found that “the listener's familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (Gass & Varonis, 1984, p. 85).

Gass and Varonis (1984) found that “the listener’s familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (p. 85).

Note:  For direct quotations of more than 40 words , display the quote as an indented block of text without quotation marks and include the authors’ names, year, and page number in parentheses at the end of the quote. For example:

This suggests that familiarity with nonnative speech in general, although it is clearly not as important a variable as topic familiarity, may indeed have some effect. That is, prior experience with nonnative speech, such as that gained by listening to the reading, facilitates comprehension. (Gass & Varonis, 1984, p. 77)

Works by Multiple Authors

APA style has specific rules for citing works by multiple authors. Use the following guidelines to determine how to correctly cite works by multiple authors in text. For more information on citing works by multiple authors see the APA Style and Grammar Guidelines page on in-text citation .

Note: When using multiple authors' names as part of your narrative, rather than in parentheses, always spell out the word and. For multiple authors' names within a parenthetic citation, use &.

One author: (Field, 2005)

Two authors: (Gass & Varonis, 1984)

Three or more authors:   (Tremblay et al., 2010)

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Essay Writing: In-Text Citations

• Essay Writing Basics
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• Formatting Your References Page
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• Structuring the 5-Paragraph Essay

In-text Citations

What are In-Text Citations?

You must cite (give credit) all information sources used in your essay or research paper whenever and wherever you use them.

When citing sources in the text of your paper, you must list:

● The author’s last name

● The year  the information was published.

Types of In-Text Citations: Narrative vs Parenthetical

A  narrative citation gives the author's name as part of the sentence .

• Example of a Narrative Citation: According to Edwards (2017) , a lthough Smith and Carlos's protest at the 1968 Olympics initially drew widespread criticism, it also led to fundamental reforms in the organizational structure of American amateur athletics.

A  parenthetical citation puts the source information in parentheses—first or last—but does not include it in  the narrative  flow.

• Example of a Parenthetical Citation:  Although Tommie Smith and John Carlos paid a heavy price in the immediate aftermath of the protests, they were later vindicated by society at large (Edwards, 2017) .

Full citation for this source (this belongs on the Reference Page of your research paper or essay):

Edwards, H. (2017).  The Revolt of the Black Athlete: 50th Anniversary Edition.  University of Illinois Press.

Sample In-text Citations

Note: This example is a  direct quote. It is an exact quotation directly from the text of the article. All direct quotes should appear in quotation marks: "...."

Try keeping direct quotes to a minimum in your writing. You need to show your understanding of the source material by being able to paraphrase or summarize it. 

List the author’s last name only (no initials) and the year the information was published, like this:

(Dodge, 2008 ). ( Author , Date).

IF you use a direct quote, add the page number to your citation, like this: 

( Dodge , 2008 , p. 125 ).

( Author , Date , page number )

What information should I cite in my paper/essay?

Credit these sources when you mention their information in any way: direct quotation, paraphrase, or summarize.

What should you credit?

Any information that you learned from another source, including:

● statistics

EXCEPTION: Information that is common knowledge: e.g., The Bronx is a borough of New York City.

Quick Sheet: APA 7 Citations

Quick help with apa 7 citations.

• Quick Sheet - Citing Journal Articles, Websites & Videos, and Creating In-Text Citations A quick guide to the most frequently-used types of APA 7 citations.

In-text Citation Tutorial

• Formatting In-text Citations, Full Citations, and Block Quotes In APA 7 Style This presentation will help you understand when, why, and how to use in-text citations in your APA style paper.

Download the In-text Citations presentation  (above)  for an in-depth look at how to correctly cite your sources in the text of your paper.

SIgnal Phrase Activity

Paraphrasing activity from the excelsior owl, in-text citation quiz.

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MLA In-text Citations and Sample Essay 9th Edition

Listing your sources at the end of your essay in the Works Cited is only the first step in complete and effective documentation. Proper citation of sources is a two-part process . You must also cite, in the body of your essay, the source your paraphrased information or where directly quoted material came from. These citations within the essay are called in-text citations . You must cite all quoted, paraphrased, or summarized words, ideas, and facts from sources. Without in-text citations, you are in danger of plagiarism , even if you have listed your sources at the end of the essay. In-text citations point the reader to the sources’ information in the works cited page, so the in-text citation should be the first item listed in the source’s citation on the works cited page, which is usually the author’s last name (or the title if there is no author) and the page number, if provided.

Two Ways to Cite Your Sources In-text

Parenthetical citation.

Cite your source in parentheses at the end of quoted or paraphrased material.

Example with a page number: In regards to paraphrasing, "It is important to remember to use in-text citations for your paraphrased information, as well as your directly quoted material" (Habib 7).

Example without a page number : Paraphrasing is "often the best choice because direct quotes should be reserved for source material that is especially well-written in style and/or clarity" (Ruiz).

Signal Phrase

Within the sentence, through the use of a "signal phrase" which signals to the reader the specific source the idea or quote came from. Include the page number(s) in parentheses at the end of the sentence, if provided.

Example with a page number: According to Habib, "It is important to remember to use in-text citations for your paraphrased information, as well as your directly quoted material" (7).

Example without a page number: According to Ruiz, paraphrasing is "often the best choice because direct quotes should be reserved for source material that is especially well-written in style and/or clarity."

*See our handout "Signal Phrases" for more examples and information on effective ways to use signal phrases for in-text citations.

Do you need to include a page number in your in-text citation?

Printed materials such as books, magazines, journals, or internet and digital sources with PDF files that show an actual printed page number need to have a page number in the citation.

Internet and digital sources with a continuously scrolling page without a page number do not need a page number in the citation.

Commonly used in-text citations in parentheses

Notes on Quotes

Block quotation format.

When using long quotations that are over four lines of prose or over three lines of poetry in length, you will need to use block quotation format. Block format is indented one inch from the margin (you can hit the "tab" button twice to move it one inch). Additionally, block quotes do not use quotation marks, and the parenthetical citation comes after the period of the last sentence. Please see the following sample essay for an example block quote.

Signal Phrase Examples and Ideas

Please see the following sample essay for different kinds of signal phrases and parenthetical in-text citations, which correspond with the sample Works Cited page at the end. The Writing Center also has a handout on signal phrases with many different verb options.

Learn more about the MLA Works Cited page by reviewing this handout .

For information on STLCC's academic integrity policy, check out this website .

Home / Guides / Citation Guides / MLA Format / How to Cite an Essay in MLA

How to Cite an Essay in MLA

The guidelines for citing an essay in MLA format are similar to those for citing a chapter in a book. Include the author of the essay, the title of the essay, the name of the collection if the essay belongs to one, the editor of the collection or other contributors, the publication information, and the page number(s).

Citing an Essay

Mla essay citation structure.

Last, First M. “Essay Title.” Collection Title, edited by First M. Last, Publisher, year published, page numbers. Website Title , URL (if applicable).

MLA Essay Citation Example

Gupta, Sanjay. “Balancing and Checking.” Essays on Modern Democracy, edited by Bob Towsky, Brook Stone Publishers, 1996, pp. 36-48. Essay Database, www . databaseforessays.org/modern/modern-democracy.

MLA Essay In-text Citation Structure

(Last Name Page #)

MLA Essay In-text Citation Example

Click here to cite an essay via an EasyBib citation form.

MLA Formatting Guide

MLA Formatting

• Annotated Bibliography
• Bibliography
• Block Quotes
• et al Usage
• In-text Citations
• Paraphrasing
• Page Numbers
• Sample Paper
• Works Cited
• MLA 8 Updates
• MLA 9 Updates
• View MLA Guide

Citation Examples

• Book Chapter
• Journal Article
• Magazine Article
• Newspaper Article
• Website (no author)
• View all MLA Examples

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To cite your sources in an essay in MLA style, you need to have basic information including the author’s name(s), chapter title, book title, editor(s), publication year, publisher, and page numbers. The templates for in-text citations and a works-cited-list entry for essay sources and some examples are given below:

In-text citation template and example:

For citations in prose, use the first name and surname of the author on the first occurrence. For subsequent citations, use only the surname(s). In parenthetical citations, always use only the surname of the author(s).

Citation in prose:

First mention: Annette Wheeler Cafarelli

Subsequent occurrences: Wheeler Cafarelli

Parenthetical:

….(Wheeler Cafarelli).

Works-cited-list entry template and example:

The title of the chapter is enclosed in double quotation marks and uses title case. The book or collection title is given in italics and uses title case.

Surname, First Name. “Title of the Chapter.” Title of the Book , edited by Editor(s) Name, Publisher, Publication Year, page range.

Cafarelli, Annette Wheeler. “Rousseau and British Romanticism: Women and British Romanticism.” Cultural Interactions in the Romantic Age: Critical Essays in Comparative Literature , edited by Gregory Maertz. State U of New York P, 1998, pp. 125–56.

To cite an essay in MLA style, you need to have basic information including the author(s), the essay title, the book title, editor(s), publication year, publisher, and page numbers. The templates for citations in prose, parenthetical citations, and works-cited-list entries for an essay by multiple authors, and some examples, are given below:

For citations in prose, use the first name and surname of the author (e.g., Mary Strine).

For sources with two authors, use both full author names in prose (e.g., Mary Strine and Beth Radick).

For sources with three or more authors, use the first name and surname of the first author followed by “and others” or “and colleagues” (e.g., Mary Strine and others). In subsequent citations, use only the surname of the first author followed by “and others” or “and colleagues” (e.g., Strine and others).

In parenthetical citations, use only the author’s surname. For sources with two authors, use two surnames (e.g., Strine and Radick). For sources with three or more author names, use the first author’s surname followed by “et al.”

First mention: Mary Strine…

Subsequent mention: Strine…

First mention: Mary Strine and Beth Radick…

Subsequent mention: Strine and Radick…

First mention: Mary Strine and colleagues …. or Mary Strine and others

Subsequent occurrences: Strine and colleagues …. or Strine and others

…. (Strine).

….(Strine and Radick).

….(Strine et al.).

The title of the essay is enclosed in double quotation marks and uses title case. The book or collection title is given in italics and uses title case.

Surname, First Name, et al. “Title of the Essay.” Title of the Book , edited by Editor(s) Name, Publisher, Publication Year, page range.

Strine, Mary M., et al. “Research in Interpretation and Performance Studies: Trends, Issues, Priorities.” Speech Communication: Essays to Commemorate the 75th Anniversary of the Speech Communication Association , edited by Gerald M. Phillips and Julia T. Wood, Southern Illinois UP, 1990, pp. 181–204.

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Reference Examples

More than 100 reference examples and their corresponding in-text citations are presented in the seventh edition Publication Manual . Examples of the most common works that writers cite are provided on this page; additional examples are available in the Publication Manual .

To find the reference example you need, first select a category (e.g., periodicals) and then choose the appropriate type of work (e.g., journal article ) and follow the relevant example.

When selecting a category, use the webpages and websites category only when a work does not fit better within another category. For example, a report from a government website would use the reports category, whereas a page on a government website that is not a report or other work would use the webpages and websites category.

Also note that print and electronic references are largely the same. For example, to cite both print books and ebooks, use the books and reference works category and then choose the appropriate type of work (i.e., book ) and follow the relevant example (e.g., whole authored book ).

Examples on these pages illustrate the details of reference formats. We make every attempt to show examples that are in keeping with APA Style’s guiding principles of inclusivity and bias-free language. These examples are presented out of context only to demonstrate formatting issues (e.g., which elements to italicize, where punctuation is needed, placement of parentheses). References, including these examples, are not inherently endorsements for the ideas or content of the works themselves. An author may cite a work to support a statement or an idea, to critique that work, or for many other reasons. For more examples, see our sample papers .

Reference examples are covered in the seventh edition APA Style manuals in the Publication Manual Chapter 10 and the Concise Guide Chapter 10

Related handouts

• Common Reference Examples Guide (PDF, 147KB)
• Reference Quick Guide (PDF, 225KB)

Textual Works

Textual works are covered in Sections 10.1–10.8 of the Publication Manual . The most common categories and examples are presented here. For the reviews of other works category, see Section 10.7.

• Journal Article References
• Magazine Article References
• Newspaper Article References
• Blog Post and Blog Comment References
• UpToDate Article References
• Book/Ebook References
• Diagnostic Manual References
• Children’s Book or Other Illustrated Book References
• Classroom Course Pack Material References
• Religious Work References
• Chapter in an Edited Book/Ebook References
• Dictionary Entry References
• Wikipedia Entry References
• Report by a Government Agency References
• Report with Individual Authors References
• Brochure References
• Ethics Code References
• Fact Sheet References
• ISO Standard References
• Press Release References
• White Paper References
• Conference Presentation References
• Conference Proceeding References
• Published Dissertation or Thesis References
• Unpublished Dissertation or Thesis References
• ERIC Database References
• Preprint Article References

Data and Assessments

Data sets are covered in Section 10.9 of the Publication Manual . For the software and tests categories, see Sections 10.10 and 10.11.

• Data Set References
• Toolbox References

Audiovisual Media

Audiovisual media are covered in Sections 10.12–10.14 of the Publication Manual . The most common examples are presented together here. In the manual, these examples and more are separated into categories for audiovisual, audio, and visual media.

• Artwork References
• Clip Art or Stock Image References
• Film and Television References
• Musical Score References
• Online Course or MOOC References
• Podcast References
• PowerPoint Slide or Lecture Note References
• Radio Broadcast References
• TED Talk References
• Transcript of an Audiovisual Work References
• YouTube Video References

Online Media

Online media are covered in Sections 10.15 and 10.16 of the Publication Manual . Please note that blog posts are part of the periodicals category.

• Facebook References
• Instagram References
• LinkedIn References
• Online Forum (e.g., Reddit) References
• TikTok References
• X References
• Webpage on a Website References
• Clinical Practice References
• Open Educational Resource References
• Whole Website References

• In-Text Citation and Notes

Citing Sources in the Text of your Paper

When writers use an outside source, they must give credit to the original writer or creator of that source. This also allows a reader to easily make note of the source’s bibliographic entry. Just as each style guide has rules for creating a citation in a bibliography at the end of a text, each guide also has certain rules for citing the use of sources within the text of the essay.

The following are basic guidelines for citing sources in the text of your paper when using the MLA, APA, Chicago, ASA, or Turabian style guides. These guidelines may not account for every citation situation. Since citing sources is not a creative enterprise, you should consult the appropriate print version of the style guide when you have questions about citation.

MLA: In-Text Citations

MLA citation style requires that writers cite a source within the text of their essay at the end of the sentence in which the source is used.

General Guidance on in-text citations (or reference to your source) The parenthetical reference should be inserted after the last quotation mark but before the period at the end of the sentence.

General Form: (Author Last Name Page #)

Example: (Smith 42)

If two quotations from different sources are used in the same sentence The in-text citation associated with a particular quote should be placed as close to the quotation as possible without interrupting the flow of the sentence.

Example for two sources in one sentence: According to one researcher, “the design thinking process is not meant to be a formula,” (Spencer 58) whereas others might argue that steps and formulas are in fact important like Walker suggests: “following a specific path towards design success is necessary for achieving outlined goals,” (21).

If a paragraph includes several quotations from a single source A single in-text citation may be placed at the end of the paragraph. Page numbers should be included for each quotation organized by placement in the paragraph. In the following example, the first quotation from Smith appeared on page 43 of the text. The second quotation used in the paragraph came from page 12.

Example: (Smith 43, 12)

If the author is included more than once on the Works Cited page The following form should be used. Note that the format of the title on the Works Cited sheet should be mirrored in the in-text citation.

General Form: (Author Last, “Title Fragment” Page #) or (Author Last,  Title Fragment Page #)

Examples: (Smith, “Who Moved” 42) or (Smith, Big Changes 172)

If you have more than one author:

Two: (Brown and Sullivan 42)

Three: (Brown, Sullivan, and Grayson 158)

Four or more: (Brown, et al. 38)

If there is no author A title fragment should be used to make a connection between the use of the source and the citation for the source on the Works Cited page.

General Form: (“Title Fragment” Page #) or ( Title Fragment  Page #)

Examples: (“Library Links” 13) or ( Building a Bookshelf  42)

For more information related to MLA in-text citations, see the MLA Handbook , 8th ed. (pages 54-58). This title is on reserve at the circulation desk at the front of the library on the 3rd floor near the main entrance.

APA: Parenthetical In-Text Citations

To cite a source in the text of an essay, APA advocates two methods: in-text citations and attribution within the essay’s content. in-text citations should be included immediately after the quotation marks used in direct quotations or immediately after the use of the source, even if this means including the parenthetical reference in the middle of the sentence.

The following is the general form for parenthetical citations in APA style:

In-text citation: (Author Last Name, Year of Publication) Example: (Smith, 1988)

To make the citation of the source less distracting The APA also suggests mentioning the author in the essay’s content so that only the year of publication and page number may be required in the parenthetical reference.

Attribution in text: Author Last Name (Year of Publication) has argued this point. Example: Smith (1988) has argued this point.

Page numbers are not required in APA in-text citations. However, it is highly suggested that these be included. To include references to a specific part of the text, add the page number or chapter number after the year.

Examples: Smith (1988, p. 244) has written that… or Smith (1988, chap. 5) has written that…

When a work has two authors Both names should be cited every time the reference is required. Use an ampersand (&) to separate the names of authors. If a text has been authored by more than five individuals, the full listing of authors is not required in the first reference or any subsequent in-text references.

The first mention of the reference: Johnson, Smith, and Brown (1999) agree that… Subsequent mention: Johnson et al. (1999) agree that…

If a group or corporation is the author The full name of the group or corporation should be included in place of the author’s name. If an organization has a recognizable abbreviation, this may be used in subsequent references.

The first mention of the reference: (American Medical Association, 2002) Subsequent mention: (AMA, 2002)

If no author is given for a specific text Use the first couple of words of the title in place of the author’s last name. Title fragments should be formatted using the same punctuation as titles on the References page.

Examples of attribution in the text:

The recent publication  Plagiarism and You  (2002) offers some explanation…

In “Five Ways to Protect Yourself” (2000) one can find…

Examples of attribution at the end of the sentence: ( Plagiarism and You , 2002) or (“Five Ways to Protect Yourself,” 2000)

When no date is given for the publication of a text (as is the case with many websites) Include the abbreviation “n.d.” (which stands for “no date”) in place of the year of publication.

Example: In the article “Five Ways to Protect Yourself” (n.d.) one can find…

For more information related to in-text citations (or in-text referencing) using the APA format, see the Publication Manual of the American Psychological Association , 7th ed. pages 261-269. A copy of this manual is available on the 3rd floor of the library at the circulation desk.

Chicago: Notes Style

In Chicago’s Documentation Style 1, also known as notes form, the use of research sources is indicated in the text with a numerical subscript that corresponds to an entry at the end of the paper. These are called endnotes. Although footnotes (or notes at the bottom of the page) are sometimes required, endnotes have become the predominant form of notes citations.

When using endnotes to indicate the use of research sources, writers must also include a bibliography at the end of the essay. The note and the bibliographic entry include almost identical information but in a different format.

As the formats for notes are contingent on the format of the source for which the note is written, examples of note formats are included with the bibliographic examples available through the  Citing Sources  link. The B: entry would be included in the Bibliography at the end of the paper, while the N: entry gives examples to be used in footnotes or endnotes.

For further information on note format or other issues related to citing sources using the Chicago style, see  The Chicago Manual of Style , 16th ed.

Chicago: Author/Date Style

Documentation 2, also called the Author-Date style, requires the use of parenthetical references in the text of the essay as well as a list of References.

Parenthetical references should be placed at the end of the sentence, before the period, when a resource has been used. If the sentence is either long enough or complex enough so that the cited portion of the sentence is not obvious, the parenthetical reference may instead be inserted immediately after the use of information from the source. Page numbers should be included whenever possible.

General Form:  (Author Last Name Year of Publication, Page #)

Example:  (Smith 1992, 142)

The following examples illustrate parenthetical reference formats for works with more than one author.

(Smith and Johnson 1998, 14)

(Smith, Johnson, and White 2001, 42)

(Smith et al. 1998, 203)

(National Alliance for Social Consideration 1932, 11)

When organizations or corporate authors are the author of a text, the name of the organization may be shortened to its most basic title. Abbreviations for the organization are not encouraged.

In the Chicago style, daily newspapers are rarely included in a list of References. Instead, attribution may be given to information from a daily newspaper in a parenthetical reference.

General Form:  ( Newspaper Name , Day Month Year of Publication, Section and Page #)

Examples:  ( San Antonio Express-News , 2 June 2005, B2)

( New York Times , 2 June 2005, A2)

( Durant Daily Democrat , 2 June 2005, 3)

The Chicago style guide does not offer examples for creating parenthetical references when there is no given author. Standard practice has been to include the title of the work in place of the author. The title should be formatted in the same manner as the formatting in the References list entry.

( Plagiarism and You  2002, 142)

(“Five Ways to Protect Yourself” 2000, 33)

Electronic sources commonly lack a date of publication, as do other sources. When there is no date of publication listed for a source, include the abbreviation “n.d.” in place of the date.

(Statistics for Water Rights n.d.)

For further information on citing sources using the Chicago style, see The Chicago Manual of Style, 16th ed.

If the author’s name is mentioned in the text, use a parenthetical reference to show the year of publication at the end of the sentence.

…Welch contends that this is not the case (1991).

If the author’s name is not mentioned in the text, it should be included with the year of publication within parentheses.

…but it has been argued that this was not the case (Welch 1991).

Page numbers should be included within parentheses after the year of publication. These are separated by a colon and no spaces.

…but it has been argued that this was not the case (Welch 1991:136).

The following forms should be used for multiple authors:

A recent study confirmed her belief (Johnson and Smith 1995:34).

This was reinforced by recent research on the topic (Johnson, Smith, and Marcus 1999)

If a text has more than three authors, the term “et al.” with no additional punctuation marks may be used after the first author listed in the publication credits.

This was not accurate according to a recent study (Johnson et al. 2003).

If multiple sources are cited for the same statement, the author and publication year should be distinguished from other texts with a colon. Cited texts should be arranged by author name or by date; arrangement should be consistent throughout the paper.

Some studies have refuted these arguments (Benson 1993; Nguyen 1999; Brown and Goggans 2000).

For additional information on in-text citation using the ASA style, see the  American Sociological Association Style Guide , Third ed., pp. 45-47.

In the Turabian citation style, writers may use one of two forms in citing their resources: endnotes or author/date parenthetical references. Writers using the Turabian style may use the Chicago formats for both endnotes as references and for parenthetical references. Refer to Kate L. Turabian’s  A Manual for Writers , 7th ed., pp. 143-145 (notes style) and pp. 217-220 (author-date style) for more information.

Citation Sources

• MLA Style, 9th ed.
• APA Style, 7th ed.
• Chicago (Notes-Bibliography Style), 17th ed.
• Chicago (Author-Date Style), 17th ed.
•      See also the online version of the  Chicago Manual of Style
• Turabian (Notes-Bibliography Style), 9th ed.
• Turabian (Author-Date Style), 9th ed.
• ASA Style, 6th ed.

Citing Sources in the Text of a Paper

Including a list of Works Cited at the end of an essay is not enough. Learn how to cite the use of a source in the text of your paper.

Using Information from Sources in the Text of a Paper

Review five different methods for including the words of another writer or information from a research resource into the text of your paper.

Citing Creative Commons Materials

Find models and suggestions for citing Creative Commons images, video clips, music, or other materials.

Suggested Readings on Academic Integrity

Find books, articles and websites which deal with academic integrity issues.

Creating an Annotated Bibliography

Learn how to create an annotated bibliography for a class assignment or for your own use as a researcher and writer.

Learn more about Zotero – a citation management tool to help you keep track of and organize various references for papers and projects.

Avoiding Plagiarism

See Trinity University’s definitions of plagiarism and consider how to avoid these situations.

Detecting Plagiarized Material

Information and links for faculty members and others to use in detecting plagiarized materials.

• Directories
• What are citations and why should I use them?
• When should I use a citation?
• Why are there so many citation styles?
• Which citation style should I use?
• Chicago Notes Style
• Chicago Author-Date Style
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• Additional Citation Styles
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• Citing Sources

Citing Sources: What are citations and why should I use them?

What is a citation.

Citations are a way of giving credit when certain material in your work came from another source. It also gives your readers the information necessary to find that source again-- it provides an important roadmap to your research process. Whenever you use sources such as books, journals or websites in your research, you must give credit to the original author by citing the source. 

Why do researchers cite?

Scholarship is a conversation  and scholars use citations not only to  give credit  to original creators and thinkers, but also to  add strength and authority  to their own work.  By citing their sources, scholars are  placing their work in a specific context  to show where they “fit” within the larger conversation.  Citations are also a great way to  leave a trail  intended to help others who may want to explore the conversation or use the sources in their own work.

In short, citations

(1) give credit

(2) add strength and authority to your work

(3) place your work in a specific context

(4) leave a trail for other scholars

"Good citations should reveal your sources, not conceal them. They should honeslty reflect the research you conducted." (Lipson 4)

Lipson, Charles. "Why Cite?"  Cite Right: A Quick Guide to Citation Styles--MLA, APA, Chicago, the Sciences, Professions, and More . Chicago: U of Chicago, 2006. Print.

What does a citation look like?

Different subject disciplines call for citation information to be written in very specific order, capitalization, and punctuation. There are therefore many different style formats. Three popular citation formats are MLA Style (for humanities articles) and APA or Chicago (for social sciences articles).

MLA style (print journal article):  

Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles Vol. 49.3 (2003): 179-182.

APA style (print journal article):

Whisenant, W. A. (2003) How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX. Sex Roles , 49 (3), 179-182.

Chicago style (print journal article):

Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles 49, no. 3 (2003): 179-182.

No matter which style you use, all citations require the same basic information:

• Author or Creator
• Container (e.g., Journal or magazine, website, edited book)
• Date of creation or publication
• Publisher 

You are most likely to have easy access to all of your citation information when you find it in the first place. Take note of this information up front, and it will be much easier to cite it effectively later.

• << Previous: Basics of Citing
• Next: When should I use a citation? >>
• Last Updated: May 1, 2024 12:48 PM
• URL: https://guides.lib.uw.edu/research/citations

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• Citing sources

Citation Styles Guide | Examples for All Major Styles

Published on June 24, 2022 by Jack Caulfield . Revised on November 7, 2022.

A citation style is a set of guidelines on how to cite sources in your academic writing . You always need a citation whenever you quote , paraphrase , or summarize a source to avoid plagiarism . How you present these citations depends on the style you follow. Scribbr’s citation generator can help!

Different styles are set by different universities, academic associations, and publishers, often published in an official handbook with in-depth instructions and examples.

There are many different citation styles, but they typically use one of three basic approaches: parenthetical citations , numerical citations, or note citations.

Parenthetical citations

• Chicago (Turabian) author-date

CSE name-year

Numerical citations

CSE citation-name or citation-sequence

Note citations

• Chicago (Turabian) notes and bibliography

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Table of contents

Types of citation: parenthetical, note, numerical, which citation style should i use, parenthetical citation styles, numerical citation styles, note citation styles, frequently asked questions about citation styles.

The clearest identifying characteristic of any citation style is how the citations in the text are presented. There are three main approaches:

• Parenthetical citations: You include identifying details of the source in parentheses in the text—usually the author’s last name and the publication date, plus a page number if relevant ( author-date ). Sometimes the publication date is omitted ( author-page ).
• Numerical citations: You include a number in brackets or in superscript, which corresponds to an entry in your numbered reference list.
• Note citations: You include a full citation in a footnote or endnote, which is indicated in the text with a superscript number or symbol.

Citation styles also differ in terms of how you format the reference list or bibliography entries themselves (e.g., capitalization, order of information, use of italics). And many style guides also provide guidance on more general issues like text formatting, punctuation, and numbers.

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In most cases, your university, department, or instructor will tell you which citation style you need to follow in your writing. If you’re not sure, it’s best to consult your institution’s guidelines or ask someone. If you’re submitting to a journal, they will usually require a specific style.

Sometimes, the choice of citation style may be left up to you. In those cases, you can base your decision on which citation styles are commonly used in your field. Try reading other articles from your discipline to see how they cite their sources, or consult the table below.

The American Anthropological Association (AAA) recommends citing your sources using Chicago author-date style . AAA style doesn’t have its own separate rules. This style is used in the field of anthropology.

APA Style is defined by the 7th edition of the Publication Manual of the American Psychological Association . It was designed for use in psychology, but today it’s widely used across various disciplines, especially in the social sciences.

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The citation style of the American Political Science Association (APSA) is used mainly in the field of political science.

The citation style of the American Sociological Association (ASA) is used primarily in the discipline of sociology.

Chicago author-date

Chicago author-date style is one of the two citation styles presented in the Chicago Manual of Style (17th edition). It’s used mainly in the sciences and social sciences.

The citation style of the Council of Science Editors (CSE) is used in various scientific disciplines. It includes multiple options for citing your sources, including the name-year system.

Harvard style is often used in the field of economics. It is also very widely used across disciplines in UK universities. There are various versions of Harvard style defined by different universities—it’s not a style with one definitive style guide.

Check out Scribbr’s Harvard Reference Generator

MLA style is the official style of the Modern Language Association, defined in the MLA Handbook (9th edition). It’s widely used across various humanities disciplines. Unlike most parenthetical citation styles, it’s author-page rather than author-date.

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The American Chemical Society (ACS) provides guidelines for a citation style using numbers in superscript or italics in the text, corresponding to entries in a numbered reference list at the end. It is used in chemistry.

The American Medical Association ( AMA ) provides guidelines for a numerical citation style using superscript numbers in the text, which correspond to entries in a numbered reference list. It is used in the field of medicine.

CSE style includes multiple options for citing your sources, including the citation-name and citation-sequence systems. Your references are listed alphabetically in the citation-name system; in the citation-sequence system, they appear in the order in which you cited them.

The Institute of Electrical and Electronics Engineers ( IEEE ) provides guidelines for citing your sources with IEEE in-text citations that consist of numbers enclosed in brackets, corresponding to entries in a numbered reference list. This style is used in various engineering and IT disciplines.

The National Library of Medicine (NLM) citation style is defined in Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd edition).

Vancouver style is also used in various medical disciplines. As with Harvard style, a lot of institutions and publications have their own versions of Vancouver—it doesn’t have one fixed style guide.

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The Bluebook: A Uniform System of Citation is the main style guide for legal citations in the US. It’s widely used in law, and also when legal materials need to be cited in other disciplines.

Chicago notes and bibliography

Chicago notes and bibliography is one of the two citation styles presented in the Chicago Manual of Style (17th edition). It’s used mainly in the humanities.

The Oxford University Standard for the Citation of Legal Authorities ( OSCOLA ) is the main legal citation style in the UK (similar to Bluebook for the US).

There are many different citation styles used across different academic disciplines, but they fall into three basic approaches to citation:

• Parenthetical citations : Including identifying details of the source in parentheses —usually the author’s last name and the publication date, plus a page number if available ( author-date ). The publication date is occasionally omitted ( author-page ).
• Numerical citations: Including a number in brackets or superscript, corresponding to an entry in your numbered reference list.
• Note citations: Including a full citation in a footnote or endnote , which is indicated in the text with a superscript number or symbol.

Check if your university or course guidelines specify which citation style to use. If the choice is left up to you, consider which style is most commonly used in your field.

• APA Style is the most popular citation style, widely used in the social and behavioral sciences.
• MLA style is the second most popular, used mainly in the humanities.
• Chicago notes and bibliography style is also popular in the humanities, especially history.
• Chicago author-date style tends to be used in the sciences.

Other more specialized styles exist for certain fields, such as Bluebook and OSCOLA for law.

The most important thing is to choose one style and use it consistently throughout your text.

A scientific citation style is a system of source citation that is used in scientific disciplines. Some commonly used scientific citation styles are:

• Chicago author-date , CSE , and Harvard , used across various sciences
• ACS , used in chemistry
• AMA , NLM , and Vancouver , used in medicine and related disciplines
• AAA , APA , and ASA , commonly used in the social sciences

APA format is widely used by professionals, researchers, and students in the social and behavioral sciences, including fields like education, psychology, and business.

Be sure to check the guidelines of your university or the journal you want to be published in to double-check which style you should be using.

MLA Style  is the second most used citation style (after APA ). It is mainly used by students and researchers in humanities fields such as literature, languages, and philosophy.

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