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Chicago Citation Style 18th Edition

This guide will help you cite sources in Chicago Citation Style 18th Edition.

Book (14.2)

Numbers in parentheses refer to specific chapters and sections in The Chicago Manual (18th ed.) 

General Format

Full Note

1. Author First Name Surname, Book Title: Subtitle (Publisher, Year), page.

Shortened Note

2. Author Surname, Book Title, page. 

Bibliography

Author Surname, First Name or Initial. Book Title: Subtitle. Publisher, Year. 

Example

Full Note

1. Salman Rushdie, The Ground Beneath Her Feet (Henry Holt, 1999), 25. 

Shortened Note

2. Rushdie, The Ground Beneath, 28.

Bibliography

 Rushdie, Salman. The Ground Beneath Her Feet. Henry Holt, 1999.

Tips

See The Chicago Manual (13.21 - 13.25) for more information and examples on citing books.

E-Book

General Format

Full Note

1. Author First Name Surname, Book Title: Subtitle (Publisher, Year), chapter #, Format.

Shortened Note

2. Author Surname, Book Title, chapter #. 

Bibliography

Author Surname, First Name or Initial. Book Title: Subtitle. Publisher, Year. Format.

Example 1

Full Note

1. Nigel Shadbolt and Roger Hampson, As If Human: Ethics and Artificial Intelligence (Yale University Press, 2025), chap. 5, EPUB.

Shortened Note

2. Shadbolt and Hampson, As If, chap. 5.

Bibliography

Shadbolt, Nigel and Roger Hampson. As If Human: Ethics and Artificial Intelligence. Yale University Press, 2025. EPUB.

Example 2

Full Note

1. Elliot Antokoletz, Musical Symbolism in the Operas of Debussy and Bartok (Oxford University Press, 2008), 21-26, doi:10.1093/acprof:oso/9780195365825.001.0001.

Shortened Note

2. Antokoletz, Musical Symbolism, 25.

Bibliography

Antokoletz, Elliot Antokoletz. Musical Symbolism in the Operas of Debussy and Bartok (Oxford University Press, 2008). doi:10.1093/acprof:oso/9780195365825.001.0001.

Tips

See The Chicago Manual for more information and examples on citing e-books requiring a specific application or device (14.58) and books consulted online (14.60 - 14.61).
Page numbers may vary based on the e-book viewer used. It is recommended to use a chapter, section heading, or other milepost instead of a page number in many cases (eg. chap. 2 or 11.25). (See 14.59 for more specific cases regarding when page number usage may be appropriate.)

Contribution to a Multi-Author Book

General Format

Full Note

1. Author First Name Surname, "Chapter Title in Quotation Marks," in Book Title: Subtitle, ed. Editor First Name Surname (Publisher, Year), page #.

Shortened Note

2. Author Surname, "Chapter Title in Quotation Marks," page #. 

Bibliography

Author Surname, First Name or Initial. "Chapter Title in Quotation Marks." In Book Title: Subtitle, edited by Editor First Name Surname, page range of chapter. Publisher, Year.

Example

Full Note

1. Bob Stewart, "Wag of the Tail: Reflecting on Pet Ownership," in Enriching Our Lives with Animals, ed. John Jaimeson, Tony Bannerman and Selena Wong (Petlove Press, 2007),100. 

Shortened Note

2. Stewart, "Wag of the Tail," 102.

Bibliography

Stewart, Bob. "Wag of the Tail: Reflecting on Pet Ownership." In Enriching Our Lives with Animals, edited by John Jaimeson, Tony Bannerman and
Selena Wong, 97-105. Petlove Press, 2007.

Tips

See The Chicago Manual (14.9) for more information on citing one contribution in a multi-author book.
See The Chicago Manual (14.2 - 14.62) for more information and examples on citing books.

Entry in a Reference Work (e.g. Encyclopedia, Dictionary, etc.)

Numbers in parentheses refer to specific chapters and sections in The Chicago Manual (18th ed.) 

General Format

Full Note

1. Title of Reference Book, # edition. (Year of Publication), under "title of entry."

Shortened Note

2. Title of Reference Book, "title of entry."

Bibliography

Well-known reference sources, such as common dictionaries and encyclopedias, are not usually included in the bibliography but are only cited in the notes. Lesser circulated reference sources should be included in the bibliography with full publication information (14.130). 

Title of Reference Book. # edition. # volumes. Publisher, Year.

When the source lists authors:
Author Surname, Author First Name or Initial. Title of Reference Book. # edition. # volumes. Publisher, Year.

Example 1

Full Note

1. The Merriam-Webster Dictionary, revised edition (2022), under "hyperbole." 

Example 2

Full Note

1. Wikipedia, "Vincent van Gogh," last modified February 9, 2025, 01:10 (UTC), https://en.wikipedia.org/wiki/Vincent_van_Gogh. 

Example 3

Full Note 

 1. Sylvia Bruzzi, "Sainthood," in The Oxford Encyclopedia of Islam and Women, edited by Natana J. DeLong-Bas (Oxford University Press, 2013), ttps://doi.org/10.1093/acref:oiso/9780199764464.001.0001. 

Shortened Note

2. Bruzzi, "Sainthood." 

Bibliography

Bruzzi, Sylvia. "Sainthood." In The Oxford Encyclopedia of Islam and Women, edited by Natana J. DeLong-Bas. Oxford University Press, 2013. https://doi.org/10.1093/acref:oiso/9780199764464.001.0001.

Tips

See The Chicago Manual (14.132) for more information on reference book entries, online, with author and editor.
This format would also work as a base to cite reference works from Credo Reference.
If there is no publication or revision date, supply an access date instead.