The Chicago Manual of Style presents two basic documentation systems: (1) notes and bibliography and (2) author-date.
In addition to consulting The Chicago Manual of Style (17th edition) for more information, students may also find it useful to consult Kate L. Turabian's Manual for Writers of Research Papers, Theses, and Dissertations (8th edition). This manual, which presents what is commonly known as the "Turabian" citation style, follows the two CMOS patterns of documentation but offers slight modifications suited to student texts.
(Source: Purdue OWL)
A Manual for Writers of Research Papers, Theses, and Dissertations by 
The Chicago Manual of Style, 17th Edition by