Não informado. (1980). International Journal of Operations & Production Management. MCB University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Operations & Production Management. Bradford, Inglaterra: MCB University Press, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Operations & Production Management. MCB University Press, 1980.
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