Não informado. (1964). Soviet Studies. National Association for Soviet and East European Studies.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Soviet Studies. Glasgow, Inglaterra: National Association for Soviet and East European Studies, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Soviet Studies. National Association for Soviet and East European Studies, 1964.
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