Important, make sure you reference information related to Chicago Manual of Style 17--the 17th and most recent edition of this style handbook.
The Chicago Manual of Style by University of Chicago Press Editorial StaffOnline access to the complete and up-to-date contents of the 17th edition (2017). Leyburn Library has a printed copy. If you are looking for help with documentation (footnotes, in-text citations, bibliographies), you probably want Chapter 14 and/or Chapter 15. Chicago Style is a good general-purpose style and is often used in history and other fields within the humanities.