Schonberger, Richard. Operations management : improving customer service / Richard J. Schonberger, Edward M. Knod, Jr. - 4th ed., International student ed. - Homewood, IL : Irwin, c1991. - xvii, 926 p. : ill. ; 23 cm. Includes bibliographical references and index. ISBN: 0256082405 LCCN: 90044669 Subjects--Topical Terms: Production management. LC Class. No.: TS155 / .Sc6 Dewey Class. No.: 658.5