APA-referens (7:e uppl.)
Harvey, M. W. T. (2000). A symbol of wilderness: Echo Park and the American conservation movement. University of Washington Press.
Chicago-referens (17:e uppl.)
Harvey, Mark W. T. A Symbol of Wilderness: Echo Park and the American Conservation Movement. Seattle: University of Washington Press, 2000.
MLA-referens (9:e uppl.)
Harvey, Mark W. T. A Symbol of Wilderness: Echo Park and the American Conservation Movement. University of Washington Press, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.