Lenfesty, C. D. (1967). Soil survey, Adams County, Washington. U.S. Soil Conservation Service.
Cita Chicago Style (17a ed.)Lenfesty, Charles D. Soil Survey, Adams County, Washington. Washington]: U.S. Soil Conservation Service, 1967.
Cita MLA (8a ed.)Lenfesty, Charles D. Soil Survey, Adams County, Washington. U.S. Soil Conservation Service, 1967.
Precaución: Estas citas no son 100% exactas.