Não informado. (2001). Annual report of the Colorado Museum of Natural History. Colorado Museum of Natural History.
Chicago-referens (17:e uppl.)Não informado. Annual Report of the Colorado Museum of Natural History. Denver, Colo: Colorado Museum of Natural History, 2001.
MLA-referens (8:e uppl.)Não informado. Annual Report of the Colorado Museum of Natural History. Colorado Museum of Natural History, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.