Não informado. (1990). Business library review. Gordon and Breach Science Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Business Library Review. New York: Gordon and Breach Science Publishers, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Business Library Review. Gordon and Breach Science Publishers, 1990.
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