Não informado. (1969). Change: The magazine of higher learning. Heldref Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Change: The Magazine of Higher Learning. Washington: Heldref Publications, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Change: The Magazine of Higher Learning. Heldref Publications, 1969.
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