Leenders, M. R. (2002). Purchasing and supply management (12th ed.). McGraw Hill.
शिकागो स्टाइल उद्धरणLeenders, Michiel R. Purchasing and Supply Management. 12th ed. New York: McGraw Hill, 2002.
एमएलए उद्धरणLeenders, Michiel R. Purchasing and Supply Management. 12th ed. McGraw Hill, 2002.
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