Não informado. (1914). Illinois biological monographs. University of Illinois Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Illinois Biological Monographs. Urbana, Ill: University of Illinois Press, 1914.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Illinois Biological Monographs. University of Illinois Press, 1914.
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