Não informado. (2018). Annual Report of the Illinois State Museum of Natural History. Illinois State Museum of Natural History.
Chicago-referens (17:e uppl.)Não informado. Annual Report of the Illinois State Museum of Natural History. Springfield, Ill: Illinois State Museum of Natural History, 2018.
MLA-referens (8:e uppl.)Não informado. Annual Report of the Illinois State Museum of Natural History. Illinois State Museum of Natural History, 2018.
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