Walthall, W. A. (1979). Getting into business/2e (2nd ed.). Harper & Row.
शिकागो स्टाइल उद्धरणWalthall, Wylie A. Getting into Business/2e. 2nd ed. London: Harper & Row, 1979.
एमएलए उद्धरणWalthall, Wylie A. Getting into Business/2e. 2nd ed. Harper & Row, 1979.
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