Dove, J. C. (1992). Who's who in Germany: A biographical encyclopaedia. Who's who the international red series Verl..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDove, John C. Who's Who in Germany: A Biographical Encyclopaedia. Essen: Who's who the international red series Verl., 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDove, John C. Who's Who in Germany: A Biographical Encyclopaedia. Who's who the international red series Verl., 1992.
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