Guffey, Mary Ellen Essentials of Business Communication / Mary Ellen Guffey and Dana Loewys - Tenth edition. - USA : Cangage Learning, 2016. - 511 pages : illustrations ; 24 cm. Includes Index. ISBN: 978-1-285-85891-3 Subjects--Topical Terms: Public Administration Dewey Class. No.: 658.45 / GUF