Riggs, J. L. (1968). Economic decision models for engineers and managers. McGraw Hill.
शिकागो स्टाइल उद्धरणRiggs, James L. Economic Decision Models for Engineers and Managers. London: McGraw Hill, 1968.
एमएलए उद्धरणRiggs, James L. Economic Decision Models for Engineers and Managers. McGraw Hill, 1968.
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