United States. Bureau of Chemistry and Soils, Wyoming Agricultural Experiment Station, & Dunnewald, T. J. (1939). Soil survey of Johnson County, Wyoming. U.S. Dept. of Agriculture.
Chicago Style (17th ed.) CitationUnited States. Bureau of Chemistry and Soils, Wyoming Agricultural Experiment Station, and T. J. Dunnewald. Soil Survey of Johnson County, Wyoming. [Washington, D.C.]: U.S. Dept. of Agriculture, 1939.
MLA (9th ed.) CitationUnited States. Bureau of Chemistry and Soils, et al. Soil Survey of Johnson County, Wyoming. U.S. Dept. of Agriculture, 1939.
Warning: These citations may not always be 100% accurate.