Humphrey, Doris. Customer service / Doris D. Humphrey. - 2nd ed. - Australia ; Mason, OH : South-Western Cengage Learning, c2011. - x, 182 p. : col. ill. ; 28 cm. - 21st century business series . Includes index. ISBN: 9780538740289 (student ed. : pbk.) 0538740280 (student ed. : pbk.) 9780538740623 (annotated instructor's ed. : pbk.) 0538740620 (annotated instructor's ed. : pbk.) 9780538494229 0538494220 LCCN: 2009941947 Subjects--Topical Terms: Customer services.Customer relations. LC Class. No.: HF5415 HUM 2011