Zeithaml, Valerie A. Service marketing: integrating customer focus across the firm/ Valerie A. Zeithaml, Mary Jo Bitner and Dwayne D. Gremler. -- 4th ed. -- Boston; McGraw-Hill., 2006. xxvii, 708 p.; ill. 26 cm. Includes bibliographical indexes. ISBN: 0071253297 Subjects--Topical Terms: Customer services.Dewey Class. No.: GSL 658.8 Z37 2006