Rocky Mountain Association of Geologists. (1972). Geologic atlas of the Rocky Mountain region, United States of America.
Cita Chicago Style (17a ed.)Rocky Mountain Association of Geologists. Geologic Atlas of the Rocky Mountain Region, United States of America. Denver, Colo, 1972.
Cita MLA (8a ed.)Rocky Mountain Association of Geologists. Geologic Atlas of the Rocky Mountain Region, United States of America. 1972.
Precaución: Estas citas no son 100% exactas.