Não informado. (1940). Hungarian heavy industries. Hungarian Heavy Industries Foreign Trade.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Hungarian Heavy Industries. Budapest: Hungarian Heavy Industries Foreign Trade, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Hungarian Heavy Industries. Hungarian Heavy Industries Foreign Trade, 1940.
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