A reference book containing the rules of usage in punctuation, grammar, typography, and the like, used by writers, editors, proofreaders, and typographers; also known as style guide or style guideline. The standard stylebooks include: "MLA Style Manual and Guide to Scholarly Publishing", "The Chicago Manual of Style", "A Manual for Writers of Term Papers, Theses, and Dissertations" , "The BlueBook" , "Am. Psych. Assn. Publication Manual", "The New York Public Library Writer's Guide to Style and Usage", "The Associated Press Stylebook", "The New York Times Manual of Style and Usage", "The Gregg Reference Manual", and "USGPO Style Manual".