Guffey, Mary Ellen. Essentials of business communication / Mary Ellen Guffey, Dana Loewy - 9th ed. - Mason, OH : South-Western Cengage Learning;, 2013 - xxiv, [60p. ], 484 p., : 28 cm. E-B7/00892 (original, 4.064.550đ) ; E-B7/01722-23 (copy) ISBN: 1111821224 9781111821227 Subjects--Topical Terms: Business communication.Business writing.English language Subjects--Index Terms: Giao tiếp trong kinh doanh Kỹ năng viết Tiếng Anh kinh doanh Dewey Class. No.: 808 / GUF