Não informado. (1999). Rocky Mountain Geology. University of Wyoming, Department of Geology and Geophysics.
Style de citation Chicago (17e éd.)Não informado. Rocky Mountain Geology. Laramie, Wyo: University of Wyoming, Department of Geology and Geophysics, 1999.
Style de citation MLA (8e éd.)Não informado. Rocky Mountain Geology. University of Wyoming, Department of Geology and Geophysics, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.