Hafenrichter, A. L. (1968). Grasses and legumes for soil conservation in the Pacific Northwest and Great Basin States. U.S. Soil Conservation Service.
Cita Chicago Style (17a ed.)Hafenrichter, A. L. Grasses and Legumes for Soil Conservation in the Pacific Northwest and Great Basin States. Washington: U.S. Soil Conservation Service, 1968.
Cita MLA (8a ed.)Hafenrichter, A. L. Grasses and Legumes for Soil Conservation in the Pacific Northwest and Great Basin States. U.S. Soil Conservation Service, 1968.
Precaución: Estas citas no son 100% exactas.