Não informado. (1965). Business Economics. National Association of Business Economists.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Business Economics. Cleveland, Ohio: National Association of Business Economists, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Business Economics. National Association of Business Economists, 1965.
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