Não informado. (1950). Annual Conference Proceedings of the American Library Association. American Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Conference Proceedings of the American Library Association. Chicago, Ill: American Library Association, 1950.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Conference Proceedings of the American Library Association. American Library Association, 1950.
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