Não informado. (2018). Annual Report of the Illinois State Museum of Natural History. Illinois State Museum of Natural History.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Annual Report of the Illinois State Museum of Natural History. Springfield, Ill: Illinois State Museum of Natural History, 2018.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Annual Report of the Illinois State Museum of Natural History. Illinois State Museum of Natural History, 2018.
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