DILWORTH JAMES B. (1986). PRODUCTION AND OPERATIONS MANAGEMENT MANUFACTURING & NON MANUFACTURING (3RD.). RANDOM HOUSE.
Lua i Stíl Chicago (17ú heag.)DILWORTH JAMES B. PRODUCTION AND OPERATIONS MANAGEMENT MANUFACTURING & NON MANUFACTURING. 3RD. NEW YORK: RANDOM HOUSE, 1986.
Lua MLA (9ú heag.)DILWORTH JAMES B. PRODUCTION AND OPERATIONS MANAGEMENT MANUFACTURING & NON MANUFACTURING. 3RD. RANDOM HOUSE, 1986.
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