This writing and style guide is a quick reference guide that complements both A Writer's Reference edited by Diana Hacker and Nancy Sommers and The Chicago Manual of Style, 16th ed. (CMS). For additional and more in-depth information on writing and grammar, please refer to A Writer's Reference, and for more complete information on citations, refer to CMS.This writing and style guide would not have been possible without the talent and hard work of Alyssa Menard. I appreciate her efforts, focus, and attention to detail, and any errors in this guide are mine and mine alone. Many thanks also to Dr. Patrice Scanlon, Director of the Leadership Communication Skills Center at Marine Corps University, and her two associates, Andrea Hamlen and Stase Rodebaugh, for sharing MCU's Pocket Style Guide and graciously giving me permission to adapt and use the writing portion of their guide.