Schonberger, Richard. Operations management : customer-focused principles / Richard J. Schonberger, Edward M. Knod, Jr. - 6th ed. - Chicago : Irwin, c1997. - xii, 723 p. : ill. (some col.) ; 27 cm. Includes Index ISBN: 0256194068 9780256194067 0256215332 (instructor's ed.) Subjects--Topical Terms: Production management. LC Class. No.: TS155 / .S3244 1997 Dewey Class. No.: 658.5