Chicago Manual of Style Author/Date Style
The author/date system is widely used by social science and science-related disciplines. Sources are cited using in-text citations and a reference list of bibliographic information at the end of the paper.
Please note, this page presents information about the Chicago author/date system. The remainder of this guide provides information about the notes and bibliography (humanities) style. |
Be sure to check with your instructor to confirm which citation style they want you to use.
Getting started with the Chicago Manual of Style Author/Date System
In the author/date style, sources are referenced within the paper's text using parenthetical citations. A reference list at the end of the paper provides full bibliographic information for each cited source.
Click on the tabs to find examples of how to cite various resource types using the Chicago author/date system. For each resource type you will be provided with a formatting formula showing each element of the citation, a bibliographical example, and an in text example.
Visit Purdue OWL to view a sample paper using the Chicago author/date system.
Book - Single Author
FORMAT
Author's LastName, FirstName. Year. Title of Book. PlacePublished: Publisher.
EXAMPLE
Oakley, Ann. 2003. Gender on Planet Earth. New York: New Press.
IN TEXT FORM
(Oakley 2003, 77)
Book – Two or Three Authors
FORMAT
FirstAuthor's LastName, FirstName and/or Initial., and SecondAuthor's FirstName and/or Initial LastName. Year. Title of Book: Subtitle of Book. Edition number (if applicable). PlacePublished: Publisher.
EXAMPLE
Boxer, Marilyn J., and Jean H. Quataert. 2000. Connecting Spheres: European Women in a Globalizing World, 1500 to the Present. 2nd ed. New York: Oxford University Press.
IN TEXT FORM
(Boxer and Quataert 2000, 69)
Book - Four or More Authors
FORMAT
FirstAuthor's LastName, FirstName, SecondAuthor's FirstName LastName, ThirdAuthor's FirstName LastName, and ForthAuthor's FirstName LastName. Year. Title of Book: Subtitle of Book. PlacePublished: Publisher.
EXAMPLE
Clayden, Marie, Dianne Fenner, Christine McAdam, and Christine Strauss. 2003. Making It Work: A Handbook for Reading, Writing, Language and Media. Toronto: Irwin Publishing.
IN TEXT FORM
(Clayden et al. 2003, 209)
NOTE: For four or more authors, list all of the authors in the reference list; in the text, list only the first author, followed by et al.
Book – Corporate Author
FORMAT
CorporationName. Year. Title of Book. PlacePublished: Publisher.
EXAMPLE
American Medical Association. 1998. Essential Guide to Asthma. New York: Pocket Books.
IN TEXT FORM
(American Medical Association 1998, 141)
Book – No Author or Editor
FORMAT
Title of Book. Year. PlacePublished: Publisher.
EXAMPLE
American Heritage Dictionary for Learners of English. 2002. Boston: Houghton.
IN TEXT FORM
(American Heritage Dictionary for Learners of English 2002, 309)
Book – Editor as Author
FORMAT
Editor's LastName, FirstName and/or Initial., ed. Year. Title of Book: Subtitle of Book. PlacePublished: Publisher.
EXAMPLE
Hughes, Kenneth J., ed. 1990. Contemporary Manitoba Writers: New Critical Studies. Winnipeg: Turnstone Press.
IN TEXT FORM
(Hughes 1990, 77)
Chapter or Other Part of a Book
FORMAT
ChapterAuthor's LastName, FirstName. Year. "Chapter Title." In Title of Book: Subtitle of Book, edited by FirstEditor's FirstName LastName and SecondEditor's FirstName LastName, xx-xx. PlacePublished: Publisher.
EXAMPLE
Crozier, Lorna. 2001. “What Stays in the Family.” In Dropped Threads: What We Aren’t Told, edited by Carol Shields and Marjorie Anderson, 11-18. Toronto: Vintage Canada.
IN TEXT FORM
(Crozier 2001, 14)
Electronic Book
FORMAT
Author's LastName, FirstName. Year. Title of eBook: Subtitle of eBook. PlacePublished: Publisher. Collection name e-book.
EXAMPLE
Russell, Martin. 2001. Beethoven’s Hair: An Extraordinary Historical Odyssey and a Scientific Mystery Solved. New York: Broadway Books. ebrary collections e-book.
IN TEXT FORM
(Martin 2001, 46)
NOTE: When citing an e-book that does not have fixed page numbers, use a chapter, section, or paragraph number, or another reference marker.
Journal – Print
FORMAT
Author's LastName, FirstName. Year. "Title of Article: Subtitle of Article." Title of Journal. volume (issue): xx-xx.
EXAMPLE
Berger, Benjamin. 2002. “The Limits of Belief: Freedom of Religion, Secularism, and the Liberal State.” Canadian Journal of Law and Society 17(1): 39-68.
IN TEXT FORM
(Berger 2002, 47)
Journal Article from a Library Database or the Internet with a DOI
FORMAT
Author's LastName, FirstName. Year. "Title of Article: Subtitle of Article." Title of Journal. volume (issue): xx-xx. doi:10.xxxxxxxxx.
EXAMPLE
Tolmacz, Rami. 2008. “Concern and Empathy: Two Concepts or One.” American Journal of Psychoanalysis 68(3): 257-275. doi: 10.1057/ajp.2008.22.
IN TEXT FORM
(Tolmacz 2008, 260)
Journal Article from a Library Database without a DOI
FORMAT
Author's LastName, FirstName Initial. Year. "Title of Article: Subtitle of Article." Title of Journal. volume (issue): xx-xx. Library Database Name.
EXAMPLE
Sandage, Steven J. 2010. “Comparison of Two Group Interventions to Promote Forgiveness: Empathy as a Mediator of Change.” Journal of Mental Health Counseling 32(1): 35-57. Academic Search Complete.
IN TEXT FORM
(Sandage 2010, 43)
Journal Article from the Internet without a DOI
FORMAT
Author's LastName, FirstName Initial. Year. "Title of Article: Subtitle of Article." Title of Journal. volume (issue). URL.
EXAMPLE
Bean, Heidi R. 2009. “Carla Harryman’s Non/Representation and the Ethics of Dispersive.” Postmodern Culture 20(1). http://muse.jhu.edu/journals/postmodern_culture/v020/20.1.bean.html.
IN TEXT FORM
(Bean 2009)
Webpages
FORMAT
Author's Last Name, First Name or CorporationName. Year. “Title of Web Article.” Published, Modified or Accessed Month Day, Year. URL.
EXAMPLE
Google. 2009. “Google Privacy Policy.” Last modified March 11, 2009. http://www.google.com/intl/en/privacypolicy.html.
IN TEXT FORM
(Google 2009)
MORE DETAILS
Webpage with Corporation as Author
FORMAT
CorporationName. Year. “Title of Web Article.” Published, Modified or Accessed Month Day, Year. URL.
EXAMPLE
McDonald’s Corporation. 2008. “McDonald’s Happy Meal Toy Safety Facts.” Accessed July 19, 2008. http://www.mcdonalds.com/corp/about/factsheets.html.
IN TEXT FORM
(McDonald’s 2008)
Webpage with Person as Author
FORMAT
Author's Last Name, First Name. Year. “Title of Web Article.” Owner/Sponsor of Site. Published, Modified or Accessed Month Day, Year, URL.
EXAMPLE
Watson, Ivan. 2011. “Tunisians Vote in First Election Following Arab Spring.” CNN.com. Last modified October 23, 2011. http://us.cnn.com/2011/10/23/world/africa/tunisia-elections/index.html.
IN TEXT FORM
(Watson 2011)
Webpage with No Publish or Revision Date
FORMAT
Author's Last Name, First Name or CorporationName. n.d. “Title of Web Article.” Accessed Month Day, Year. URL.
EXAMPLE
The Katharine Maltwood Society. n.d. “Home Page.” Accessed September 4, 2018. http://www.thekatharinemaltwoodsociety.com/.
IN TEXT FORM
(Katharine Maltwood Society, n.d.)
Blog
FORMAT
Blogger's LastName, FirstName. Year. "Title of Blog Post" Title of Blog (blog). Name of Larger Publication if Applicable. Date of post. URL.
EXAMPLE
Posner, Richard. 2011. “Inequality in Income and Wealth.” The Becker-Posner Blog, January 30, 2011. http://www.becker-posner-blog.com/2011/01/inequality-in-income-and-wealthposner.html.
IN TEXT FORM
(Posner 2009)
MORE DETAILS
Blogs are cited like online newspaper articles.
EXAMPLE
Amlen, Deb. 2015. "One Who Gives a Hoot." Wordplay (blog), New York Times, January 26, 2015. https://wordplay.blogs.nytimes.com/2015/01/26/one-who-gives-a-hoot/.
IN TEXT FORM
(Amlen 2015)
MORE DETAILS
Government Publications - Online
FORMAT
ProvinceName. Name of Authoring Government Department, Agency or Committee. Year. Title of Document. PlacePublished: Publishing Department, Agency or Committee. URL.
EXAMPLE
British Columbia. Ministry of Education. 2011. Special Education Services: A Manual of Policies, Procedures and Guidelines. Victoria, BC: Ministry of Education. http://www.bced.gov.bc.ca/specialed/ppandg.htm.
IN TEXT FORM
(British Columbia. Ministry of Education 2011)
NOTE: The information given on webpages can vary. See below for additional examples of how to configure your citation when different reference information is available.
Government Publications - Print
FORMAT
CountryName. Name of Authoring Government Department, Agency or Committee. Year. Title of Document. PlacePublished: Publishing Department, Agency or Committee.
EXAMPLE
Canada. Canadian Advisory Council on the Status of Women 1991. Brief to the Royal Commission on New Reproductive Technologies. Ottawa, ON: Canadian Advisory Council on the Status of Women.
IN TEXT FORM
(Canada. Canadian Advisory Council on the Status of Women 1991)
Motion Picture
FORMAT
Director's LastName, FirstName, dir. Year Media you watched was Published. Title of Work. PlacePublished: Publisher. Format.
EXAMPLE
Hancock, John Lee, dir. 2010. The Blind Side. Burbank, CA: Warner Home Video. DVD.
IN TEXT FORM
(Hancock 2010)
MORE DETAILS
The Chicago Manual of Style does not provide many citation examples for media in the author-date style. The examples used in the guide modify the format used in Chicago's notes/bibliography style.
Sound Recording
FORMAT
LastName, FirstName of composer, performer, or group. Year of original recording if applicable. Title of Recording. Contributing personnel if applicable. Track number on AlbumTitle if applicable. Year of Release if applicable, Recording Company and Publisher Acquisition number of LP or CD if available, Format.
EXAMPLE
Horowitz, Vladimir. 1989. The Last Recording. Sony Classical SK 45818, 1990, compact disc.
IN TEXT FORM
(Horowitz 1989)
EXAMPLE
Pink Floyd. 1970. Atom Heart Mother. Capital CDP7 46381 2, 1990, compact disc.
IN TEXT FORM
(Pink Floyd 1970)
EXAMPLE
Rihanna [Robin Fentyl], vocalist. 2007. "Umbrella." Featuring Jay-Z. Track 1 on Rihanna, Good Girl Gone Bad. Island Def Jam. MP3 audio.
IN TEXT FORM
(Rihanna 2007)
MORE DETAILS
Citations of video, film, and sound recordings vary according to the nature of the material being referenced and depending on what element is most important for your paper. Any element relevant to identifying a resource should be included. Depending on the resource type, you may cite both the release date for the resource, as well as the original date of creation. For online media, include a URL at the end of the citation. When constructing citations for various media types, do so in as consistent a manner as possible throughout your research paper.
Course Pack
The Chicago Manual of Style, 17th ed. does not provide instructions on how to cite course packs. The following is one possible format to follow:
FORMAT
Author's LastName, FirstName. Year. "Title of Article." In Course Pack Title: Course Pack Subtitle, edited by Editor's FirstName LastName, xx-xx. PlacePublished: Publisher.
EXAMPLE
Klein, Joseph. 2011. “Recommendations for Care.” In NURS 2190: Nursing Philosophical Issues Course Pack, edited by Sarah Kaye, 11-24. Coquitlam: Douglas College Bookstore.
IN TEXT FORM
(Klein 2011)