Não informado. (1940). Special Scientific Report. U.S. Fish and Wildlife Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Special Scientific Report. Seattle, Wash: U.S. Fish and Wildlife Service, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Special Scientific Report. U.S. Fish and Wildlife Service, 1940.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.