Não informado. (1999). Rocky Mountain Geology. University of Wyoming, Department of Geology and Geophysics.
Čikaški stil citiranja (17. izdanje)Não informado. Rocky Mountain Geology. Laramie, Wyo: University of Wyoming, Department of Geology and Geophysics, 1999.
MLA način citiranja (8. izdanje)Não informado. Rocky Mountain Geology. University of Wyoming, Department of Geology and Geophysics, 1999.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.