Não informado. (1900). Bulletin of the Wisconsin Natural History Society. Wisconsin Natural History Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Wisconsin Natural History Society. Milwaukee, Wis: Wisconsin Natural History Society, 1900.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Wisconsin Natural History Society. Wisconsin Natural History Society, 1900.
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