The Chicago Manual of Style (CMOS) , often referred to as the "editor's bible," is the definitive authority for writers, editors, and publishers in the book industry and academia. Originally a single sheet of typographic fundamentals from the 1890s, it has evolved over 120 years into a comprehensive reference covering manuscript preparation, grammar, and two distinct documentation systems: and Author-Date . Core Citation Systems
The manual provides two main systems for citing sources, each serving different academic disciplines: Chicago Style | Introduction - Excelsior OWL The Chicago Manual of Style