APA (7th ed.) Citation

United States. Bureau of Chemistry and Soils, Texas Agricultural Experiment Station, Bennett, H. H., Hawker, H. W., & Simmons, C. S. (1926). General soil map, Willacy County, Texas. U.S. Dept. of Agriculture, Bureau of Chemistry and Soils.

Chicago Style (17th ed.) Citation

United States. Bureau of Chemistry and Soils, Texas Agricultural Experiment Station, Hugh H. Bennett, H. W. Hawker, and C. S. Simmons. General Soil Map, Willacy County, Texas. [Washington, D.C.]: U.S. Dept. of Agriculture, Bureau of Chemistry and Soils, 1926.

MLA (9th ed.) Citation

United States. Bureau of Chemistry and Soils, et al. General Soil Map, Willacy County, Texas. U.S. Dept. of Agriculture, Bureau of Chemistry and Soils, 1926.