Citation Guide: Chicago Manual of Style (Author/Date System)
CMS In-Text Formatting Rules
CMS Author/Date in-text formatting rules are as follows:
- A space, not a comma, should separate the author's name and the year of publication.
- Page numbers are included only when part of a source or a direct quotation is cited. Abbreviations ("p." or "pp.") are not required.
- Footnotes and endnotes are used only when there is a need to provide further information about a particular idea or when specific copyright permission needs to be documented.
Specific rules depend on whether part or all of a source is being cited as well as whether or not the author's name is mentioned in the sentence where the citation occurs.