Não informado. (1876). Bulletin of the Illinois State Museum of Natural History. Illinois State Museum of Natural History.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of the Illinois State Museum of Natural History. Springfield, Ill: Illinois State Museum of Natural History, 1876.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of the Illinois State Museum of Natural History. Illinois State Museum of Natural History, 1876.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.