Ross, S. H., & Savage, C. N. (1967). Idaho earth science: Geology, fossils, climate, water, and soils.
Cita Chicago Style (17a ed.)Ross, Sylvia H., y C. N. Savage. Idaho Earth Science: Geology, Fossils, Climate, Water, and Soils. Moscow, 1967.
Cita MLA (8a ed.)Ross, Sylvia H., y C. N. Savage. Idaho Earth Science: Geology, Fossils, Climate, Water, and Soils. 1967.
Precaución: Estas citas no son 100% exactas.