Não informado. (1962). Keio Business Review. Keio University, Society of Business and Commerce.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Keio Business Review. Tokyo: Keio University, Society of Business and Commerce, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Keio Business Review. Keio University, Society of Business and Commerce, 1962.
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