Não informado. (1954). Bulletin. Institute for the Study of the History and Culture of the Ussr.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin. Munich, Alemanha: Institute for the Study of the History and Culture of the Ussr, 1954.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin. Institute for the Study of the History and Culture of the Ussr, 1954.
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