The Chicago Manual of Style Online: Chicago-Style Citation Quick Guide
The Chicago Manual of 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. The notes and bibliography style is preferred by many in the humanities, including those in literature, history, and the arts. This style presents bibliographic information in notes and, often, a bibliography. It accommodates a variety of sources, including esoteric ones less appropriate to the author-date system. The author-date system has long been used by those in the physical, natural, and social sciences. Aside from the use of notes versus parenthetical references in the text, the two systems share a similar style. Notes and Bibliography: Sample Citations The following examples illustrate citations using the notes and bibliography system. Book One author 1. 2. Pollan, Michael. Two or more authors 1. 2. 1. 2. 1. 2. 1. 2. 1.