Não informado. (1965). Columbia Journal of World Business. Columbia Graduate School of Business.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Columbia Journal of World Business. New York: Columbia Graduate School of Business, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Columbia Journal of World Business. Columbia Graduate School of Business, 1965.
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