Zeithaml, Valarie A. Services marketing : integrating customer focus / Valarie A. Zeithaml, Mary Jo Bitner, Dwayne D. Gremler. - 6th ed. - New York : McGraw-Hill, 2013. - xxvii, 642 p. Includes bibliographical references and index. ISBN: 0071086967 : Subjects--Topical Terms: Service industries--Marketing.Customer services. LC Class. No.: HD9980.5 / .Z45 2013