Chicago citation generator
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How to cite in Chicago style
The Chicago Manual of Style is published by the University of Chicago Press. It has two systems: notes and bibliography, common in history, the arts and the humanities, and author-date, common in the sciences. This page starts with notes and bibliography from the 18th edition. You can switch to author-date in the style menu.
Journal article
LeCun, Yann, Yoshua Bengio, and Geoffrey Hinton. “Deep Learning.” Nature 521, no. 7553 (2015): 436–44. https://doi.org/10.1038/nature14539.
Book
Cormen, Thomas H., Charles E. Leiserson, Ronald L. Rivest, and Clifford Stein. Introduction to Algorithms. 3rd ed. MIT Press, 2009.
Website
Coltrera, Francesca. “5 Timeless Habits for Better Health.” Harvard Health, September 24, 2025. https://www.health.harvard.edu/blog/5-timeless-habits-for-better-health-202509243106.
Footnotes
In notes and bibliography, each citation is a numbered footnote. The first note for a source gives the full details, and later notes can use a shortened form. Every source also goes in an alphabetical Bibliography.
First footnote: Yann LeCun et al., “Deep Learning,” Nature 521, no. 7553 (2015): 437, https://doi.org/10.1038/nature14539.
Frequently asked questions
Should I use notes and bibliography or author-date?
Use whichever your instructor or journal asks for. History and the arts usually use notes and bibliography. Science and social science papers usually use author-date.
What changed in the 18th edition?
The 18th edition was published in 2024. It updates the guidance and examples for online and digital sources, and this page follows it.
Do I need a bibliography if I use footnotes?
Usually yes. Most instructors expect a bibliography with notes. Some shorter papers use notes only, so check your assignment.
How is Chicago different from Turabian?
Turabian is a student version of Chicago with the same citation rules and extra advice on writing papers and theses. For citations, the two are almost identical.