Não informado. (2001). Studies from the Department of Zoology. University of Nebraska.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Studies from the Department of Zoology. Lincoln, Neb: University of Nebraska, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Studies from the Department of Zoology. University of Nebraska, 2001.
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