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Chicago Reference Guide

Guide to Chicago citation style using the 18th Edition of the Chicago Manual of Style.

Journal Article

Journal articles are usually cited by volume and issue number. In a note, cite specific page numbers. In the bibliography, include the page range for the whole article. For articles consulted online, include a URL (preferably one based on a DOI); alternatively, list the name of the database.

Notes

One author

Hyeyoung Kwon, “Inclusion Work: Children of Immigrants Claiming Membership in Everyday Life,” American Journal of Sociology 127, no. 6                       (2022):1842–43, https://doi.org/10.1086/720277.

B. T. Hebert, “The Island of Bolsö: A Study of Norwegian Life,” Sociological Review 17, no. 4 (1925): 310, EBSCOhost.

Two authors

Emily L. Dittmar and Douglas W. Schemske, “Temporal Variation in Selection Influences Microgeographic Local Adaptation,” American                                Naturalist 202, no. 4 (2023): 480, https://doi.org/10.1086/725865.

More than four authors

Amiel A. Dror et al., “Pre-Infection 25-Hydroxyvitamin D3 Levels and Association with Severity of COVID-19 Illness,” PLOS ONE 17, no. 2                         (2022): 4–5, e0263069, https://doi.org/10.1371/journal.pone.0263069


Shortened notes

5. Kwon, “Inclusion Work,” 1851.

6. Hebert, “Island of Bolsö,” 311.

7. Lindquist, “Text-to-Speech,” 231–32.

8. Dittmar and Schemske, “Temporal Variation,” 480.

9. Dror et al., “Pre-Infection,” 7.


Bibliography entries (in alphabetical order)

Dittmar, Emily L., and Douglas W. Schemske. “Temporal Variation in Selection Influences Microgeographic Local Adaptation.” American                           Naturalist 202, no. 4 (2023): 471–85. https://doi.org/10.1086/725865.

Hebert, B. T. “The Island of Bolsö: A Study of Norwegian Life.” Sociological Review 17, no. 4 (1925): 307–13. EBSCOhost.

Kwon, Hyeyoung. “Inclusion Work: Children of Immigrants Claiming Membership in Everyday Life.” American Journal of Sociology 127, no. 6                   (2022): 1818–59. https://doi.org/10.1086/720277.

Lindquist, Benjamin. “The Art of Text-to-Speech.” Critical Inquiry 50, no. 2 (2023): 225–51. https://doi.org/10.1086/727651.

Dror, Amiel A., Nicole Morozov, Amani Daoud, et al. “Pre-Infection 25-Hydroxyvitamin D3 Levels and Association with Severity of COVID-19                     Illness.” PLOS ONE 17, no. 2 (2022): e0263069. https://doi.org/10.1371/journal.pone.0263069.

News/Magazine Article

Articles from newspapers or news sites, magazines, blogs, and the like are cited similarly. Page numbers, if any, can be cited in a note but are omitted from a bibliography entry. For articles consulted online, include a URL or the name of the database.

Notes

1. Dani Blum, “Are Flax Seeds All That?,” New York Times, December 13, 2023, https://www.nytimes.com/2023/12/13/well/eat/flax-seeds-                         benefits.html.

2. Rebecca Mead, “Terms of Aggrievement,” New Yorker, December 18, 2023, 21.

3. Rob Pegoraro, “Apple’s iPhone Is Sleek, Smart and Simple,” Washington Post, July 5, 2007, LexisNexis Academic.

4. Elana Klein, “Meet Flip, the Viral Video App Giving Away Free Stuff,” Wired, December 21, 2023, https://www.wired.com/story/flip-viral-video-               app-shopping-free-stuff/.


Shortened notes

5. Blum, “Flax Seeds.”

6. Mead, “Terms of Aggrievement,” 23–24.

7. Pegoraro, “Apple’s iPhone.”

8. Klein, “Meet Flip.”


Bibliography entries (in alphabetical order)

Blum, Dani. “Are Flax Seeds All That?” New York Times, December 13, 2023. https://www.nytimes.com/2023/12/13/well/eat/flax-seeds-                           benefits.html.

Klein, Elana. “Meet Flip, the Viral Video App Giving Away Free Stuff.” Wired, December 21, 2023. https://www.wired.com/story/flip-viral-video-                  app-shopping-free-stuff/.

Mead, Rebecca. “Terms of Aggrievement.” New Yorker, December 18, 2023.

Pegoraro, Rob. “Apple’s iPhone Is Sleek, Smart and Simple.” Washington Post, July 5, 2007. LexisNexis Academic.

Readers’ comments are cited in the text or in a note but omitted from a bibliography.

Note

9. Michelle (Reno), December 15, 2023, comment on Blum, “Flax Seeds.”

Books

Notes

Note that a place of publication is no longer required in book citations.

1. Charles Yu, Interior Chinatown (Pantheon Books, 2020), 45.

2. Amy J. Binder and Jeffrey L. Kidder, The Channels of Student Activism: How the Left and Right Are Winning (and Losing) in Campus Politics                 Today (University of Chicago Press, 2022), 117–18.


Shortened notes

3. Yu, Interior Chinatown, 48.

4. Binder and Kidder, Channels of Student Activism, 125.


Bibliography entries (in alphabetical order)

Binder, Amy J., and Jeffrey L. Kidder. The Channels of Student Activism: How the Left and Right Are Winning (and Losing) in Campus Politics                Today. University of Chicago Press, 2022.

Yu, Charles. Interior Chinatown. Pantheon Books, 2020.

Ebooks

To cite a book consulted online, include either a URL or the name of the database. For downloadable ebook formats, name the format; if no fixed page numbers are available, cite a section title or a chapter or other number in the note (or simply omit). For citing a place rather than a publisher for books published before 1900 (as in the Moby-Dick example below)

Notes

1. Arundhati Roy, The God of Small Things (Random House, 2008), chap. 6, Kindle.

2. Philip B. Kurland and Ralph Lerner, eds., The Founders’ Constitution (University of Chicago Press, 1987), chap. 10, doc. 19, https://press-                      pubs.uchicago.edu/founders/.

3. Brooke Borel, The Chicago Guide to Fact-Checking, 2nd ed. (University of Chicago Press, 2023), 92, EBSCOhost.

4. Herman Melville, Moby-Dick; or, The Whale (New York, 1851), 627, https://melville.electroniclibrary.org/moby-dick-side-by-side.


Shortened notes

5. Roy, God of Small Things, chap. 7.

6. Kurland and Lerner, Founders’ Constitution, chap. 4, doc. 29.

7. Borel, Fact-Checking, 104–5.

8. Melville, Moby-Dick, 722–23.


Bibliography entries (in alphabetical order)

Borel, Brooke. The Chicago Guide to Fact-Checking. 2nd ed. University of Chicago Press, 2023. EBSCOhost.

Kurland, Philip B., and Ralph Lerner, eds. The Founders’ Constitution. University of Chicago Press, 1987. https://press-                                                        pubs.uchicago.edu/founders/.

Melville, Herman. Moby-Dick; or, The Whale. New York, 1851. https://melville.electroniclibrary.org/moby-dick-side-by-side.

Roy, Arundhati. The God of Small Things. Random House, 2008. Kindle.

Chapter of the Book

The page range for a chapter in a book is no longer required in bibliography entries. In a note, cite specific pages as applicable.

Note

1. Kathleen Doyle, “The Queen Mary Psalter,” in The Book by Design: The Remarkable Story of the World’s Greatest Invention, ed. P. J. M.                       Marks and Stephen Parkin (University of Chicago Press, 2023), 64.

Shortened note

2. Doyle, “Queen Mary Psalter,” 65.

Bibliography entry

Doyle, Kathleen. “The Queen Mary Psalter.” In The Book by Design: The Remarkable Story of the World’s Greatest Invention, edited by P. J. M.                 Marks and Stephen Parkin. University of Chicago Press, 2023.


In some cases, you may want to cite the collection as a whole instead.

Note

1. P. J. M. Marks and Stephen Parkin, eds., The Book by Design: The Remarkable Story of the World’s Greatest Invention (University of                             Chicago Press, 2023).

Shortened note

2. Marks and Parkin, Book by Design.

Bibliography entry

Marks, P. J. M., and Stephen Parkin, eds. The Book by Design: The Remarkable Story of the World’s Greatest Invention. University of Chicago                Press, 2023.

Translated Books

In the following examples, the author’s name follows Eastern order (family name first) rather than Western order (family name last); the author is therefore referred to as “Liu” in a shortened note, and the name is not inverted in a bibliography entry. 

Note

1. Liu Xinwu, The Wedding Party, trans. Jeremy Tiang (Amazon Crossing, 2021).


Shortened note

2. Liu, Wedding Party, 279.


Bibliography entry

Liu Xinwu. The Wedding Party. Translated by Jeremy Tiang. Amazon Crossing, 2021.

Thesis or dissertation

Note

1. Yuna Blajer de la Garza, “A House Is Not a Home: Citizenship and Belonging in Contemporary Democracies” (PhD diss., University of                             Chicago, 2019), 66–67, ProQuest (13865986).


Shortened note

2. Blajer de la Garza, “House,” 93.


Bibliography entry

Blajer de la Garza, Yuna. “A House Is Not a Home: Citizenship and Belonging in Contemporary Democracies.” PhD diss., University of                                 Chicago, 2019. ProQuest (13865986).

Webpage

It is often sufficient simply to describe web pages and other website content in the text (“As of November 15, 2023, Google’s privacy policy stated . . .”). If a more formal citation is needed, it may be styled like the examples below. If a source does not list a date of publication or revision, include an access date. Alternatively, if a publicly available archive of the content has been saved using the Internet Archive’s Wayback Machine or similar service, the link for that version may be cited.

Notes

1. “Privacy Policy,” Privacy & Terms, Google, effective November 15, https://policies.google.com/privacy.

2. “Wikipedia: Manual of Style,” Wikimedia Foundation, last modified December 19, 2023, 21:54 (UTC),                                                                                https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style.

3. “About Yale: Yale Facts,” Yale University, accessed March 8, 2022, https://www.yale.edu/about-yale/yale-facts.

or

3. “About Yale: Yale Facts,” Yale University, archived March 8, 2022, at                                                                                                                                   https://web.archive.org/web/20220308143337/https://www.yale.edu/about-yale/yale-facts.


Shortened notes

4. Google, “Privacy Policy.”

5. “Wikipedia: Manual of Style.”

6. “Yale Facts.”


Bibliography entries (in alphabetical order)

In the notes, the title will usually come first (as in the examples above); in a bibliography entry, the source should be listed under the owner or sponsor of the site.

Google. “Privacy Policy.” Privacy & Terms. Effective November 15, 2023. https://policies.google.com/privacy.

Wikimedia Foundation. “Wikipedia: Manual of Style.” Last modified December 19, 2023, at 21:54 (UTC).                                                                               https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style.

Yale University. “About Yale: Yale Facts.” Accessed March 8, 2022. https://www.yale.edu/about-yale/yale-facts.

or

Yale University. “About Yale: Yale Facts.” Archived March 8, 2022, at https://web.archive.org/web/20220308143337/https://www.yale.edu/about-                 yale/yale-facts.

Social Media Content

Citations of content posted to social media can usually be limited to the text (as in the first example below). A note may be added if a more formal citation is needed. In rare cases, a bibliography entry may also be appropriate. In place of a title, quote up to the first 280 characters of the post. Comments are cited in reference to the original post.

Text

The Instagram post included a photo of the president delivering a eulogy at the National Cathedral and referred to O’Connor as “gracious and principled” (@potus, December 19, 2023).


Notes

1. NASA Webb Telescope (@NASAWebb), “👀 Sneak a peek at the deepest & sharpest infrared image of the early universe ever taken—all in a day’s work for the Webb telescope. (Literally, capturing it took less than a day!),” Twitter (now X), July 11, 2022,                                                                       https://twitter.com/NASAWebb/status/1546621080298835970.

2. Chicago Manual of Style, “Is the world ready for singular they? We thought so back in 1993,” Facebook, April 17, 2015,                                                     https://www.facebook.com/ChicagoManual/posts/10152906193679151.


Shortened notes

3. NASA Webb Telescope, “👀 Sneak a peek.”

4. Michele Truty, April 17, 2015, 1:09 p.m., comment on Chicago Manual of Style, “singular they.”


Bibliography entry

Chicago Manual of Style. “Is the world ready for singular they? We thought so back in 1993.” Facebook, April 17, 2015.                                                         https://www.facebook.com/ChicagoManual/posts/10152906193679151.

Personal Communication

Personal communications, including email and text messages and direct messages sent through social media, are usually cited in the text or in a note only; they are rarely included in a bibliography.

Note

1. Sam Gomez, Facebook direct message to author, August 1, 2024.

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