Não informado. (1978). Current Bibliography Directory of the Arts and Sciences. Institute for Scientific Information.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Current Bibliography Directory of the Arts and Sciences. Philadelphia, Pa: Institute for Scientific Information, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Current Bibliography Directory of the Arts and Sciences. Institute for Scientific Information, 1978.
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