APA-referens (7:e uppl.)
Lewis, W. G. (2010). In the footsteps of Lewis and Clark: Early commemorations and the origins of the national historic trail. University Press of Colorado.
Chicago-referens (17:e uppl.)
Lewis, Wallace G. In the Footsteps of Lewis and Clark: Early Commemorations and the Origins of the National Historic Trail. Boulder: University Press of Colorado, 2010.
MLA-referens (9:e uppl.)
Lewis, Wallace G. In the Footsteps of Lewis and Clark: Early Commemorations and the Origins of the National Historic Trail. University Press of Colorado, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.