SCHONBERGER. (1991). Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin.
Čikaški stil citiranja (17. izdanje)SCHONBERGER. Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin, 1991.
MLA način citiranja (8. izdanje)SCHONBERGER. Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin, 1991.
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