Mary, Ellen Guffey Bussiness Communication : Process & Product/ Mary Ellen Guffey...[et all.]. - 4th brief canadian ed. - Toronto: Nelson Education Ltd, 2013. - xxv, 464 p. : ill. ; Includes bibliographical reference and index. ISBN: 03240077663 Subjects--Topical Terms: Business LC Class. No.: HF5718.3 / .G82 2012