Chicago is a documentation style that has been published by the Chicago University Press since 1906. This citation style incorporates rules of grammar and punctuation common in American English. Typically, Chicago style presents two basic documentation systems: (1) notes and bibliography and (2) author-date. Choosing between the two often depends on subject matter and the nature of sources cited, as each system is favored by different groups of scholars.
Print copies are available at the Jung-Kellogg Learning Center on main campus.
For examples of Chicago citations, see the following:
The Chicago Manual of Style by 
A Manual for Writers of Research Papers, Theses, and Dissertations by