Zeithaml, Valarie A. Services marketing : integrating customer focus across the firm / Valarie A. Zeithaml, Mary Jo Bitner, Dwayne D. Gremler - 6th ed. - McGraw-Hill Education 2013 25322 ISBN: 9780071086967 Subjects--Topical Terms: Service industries - MarketingCustomer servicesMarketing LC Class. No.: HD / 9980.5