DILWORTH, J. B. (1993). PRODUCTION AND OPERATIONS MGMT. MCGRAW HILL BOOK CO.
Lua i Stíl Chicago (17ú heag.)DILWORTH, J B. PRODUCTION AND OPERATIONS MGMT. NEW-YORK: MCGRAW HILL BOOK CO, 1993.
Lua MLA (9ú heag.)DILWORTH, J B. PRODUCTION AND OPERATIONS MGMT. MCGRAW HILL BOOK CO, 1993.
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