Wohl, E. E. (2013). Wide rivers crossed: The South Platte and the Illinois of the American prairie. University Press of Colorado.
Chicago-referens (17:e uppl.)Wohl, Ellen E. Wide Rivers Crossed: The South Platte and the Illinois of the American Prairie. Boulder: University Press of Colorado, 2013.
MLA-referens (9:e uppl.)Wohl, Ellen E. Wide Rivers Crossed: The South Platte and the Illinois of the American Prairie. University Press of Colorado, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.