Não informado. (1866). Geological survey of Illinois. Geology and Palaeontology.
Chicago Style (17th ed.) CitationNão informado. Geological Survey of Illinois. Springfield, Ill: Geology and Palaeontology, 1866.
MLA (8th ed.) CitationNão informado. Geological Survey of Illinois. Geology and Palaeontology, 1866.
Warning: These citations may not always be 100% accurate.