Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.
Style de citation Chicago (17e éd.)Não informado. The Mountain Geologist. Denver, Colo: Rocky Mountain Association of Geologists.
Style de citation MLA (8e éd.)Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.
Attention : ces citations peuvent ne pas être correctes à 100%.