Lua APA (7ú heag.)

SCHONBERGER. (1991). Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin.

Lua i Stíl Chicago (17ú heag.)

SCHONBERGER. Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin, 1991.

Lua MLA (8ú heag.)

SCHONBERGER. Operations Management Improving Costumer Service Richard J Schonberger, Edward M. Knod, Jr. Irwin, 1991.

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