APA (7th ed.) Citation

United States. Agency for International Development & United States. Soil Management Support Services. (1983). Keys to soil taxonomy: Alfisols, aridisols, entisols, histosols, inceptisols, mollisols, oxisols, spodosols, ultisols, vertisols, soil family. U.S. Dept. of Agriculture, Agency for International Development, Soil Management Support Services.

Chicago Style (17th ed.) Citation

United States. Agency for International Development and United States. Soil Management Support Services. Keys to Soil Taxonomy: Alfisols, Aridisols, Entisols, Histosols, Inceptisols, Mollisols, Oxisols, Spodosols, Ultisols, Vertisols, Soil Family. [Washington, D.C.]: U.S. Dept. of Agriculture, Agency for International Development, Soil Management Support Services, 1983.

MLA (9th ed.) Citation

United States. Agency for International Development and United States. Soil Management Support Services. Keys to Soil Taxonomy: Alfisols, Aridisols, Entisols, Histosols, Inceptisols, Mollisols, Oxisols, Spodosols, Ultisols, Vertisols, Soil Family. U.S. Dept. of Agriculture, Agency for International Development, Soil Management Support Services, 1983.