Não informado. (1931). Investigational report. U.S. Department of Commerce, Bureau of Fisheries.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Investigational Report. Washington: U.S. Department of Commerce, Bureau of Fisheries, 1931.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Investigational Report. U.S. Department of Commerce, Bureau of Fisheries, 1931.
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