Não informado. (1947). Business Education Forum. National Business Education Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Business Education Forum. Washington: National Business Education Association, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Business Education Forum. National Business Education Association, 1947.
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