Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.
Cita Chicago Style (17a ed.)Não informado. The Mountain Geologist. Denver, Colo: Rocky Mountain Association of Geologists.
Cita MLA (8a ed.)Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.
Precaución: Estas citas no son 100% exactas.