Não informado. (2004). Supply management. Chartered Institute of Purchasing and Supply.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Supply Management. London: Chartered Institute of Purchasing and Supply, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Supply Management. Chartered Institute of Purchasing and Supply, 2004.
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