APA (7th ed.) Citation

United States. Bureau of Soils & Coffey, G. N. (1909). Soil map, reconnoissance survey. U.S. Dept. of Agriculture, Bureau of Soils.

Chicago Style (17th ed.) Citation

United States. Bureau of Soils and George N. Coffey. Soil Map, Reconnoissance Survey. [Washington, D.C.]: U.S. Dept. of Agriculture, Bureau of Soils, 1909.

MLA (9th ed.) Citation

United States. Bureau of Soils and George N. Coffey. Soil Map, Reconnoissance Survey. U.S. Dept. of Agriculture, Bureau of Soils, 1909.