Não informado. (1976). Engineering Costs and Production Economics. Elsevier Science Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Engineering Costs and Production Economics. Amsterdam: Elsevier Science Publishers, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Engineering Costs and Production Economics. Elsevier Science Publishers, 1976.
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