Style Guides: The Chicago Manual of Style Online, 17th ed. by University of Chicago Press (This is my primary guide.) The Copyeditor's Handbook, 3rd ed. by Amy Einsohn The Editor's Companion by Steve Dunham The Elements of Style, 4th ed. by William Strunk Jr. and E.B. White Dictionaries: Merriam-Webster Dictionary Oxford English US Dictionary Dictionary.com Web Style Guides: BuzzFeed Style Guide The Yahoo! Style Guide