APA (7th ed.) Citation

Benton, T. H., & Russell, N. J. (1928). Soil survey of Harrison County, Iowa. G.P.O..

Chicago Style (17th ed.) Citation

Benton, T. H., and N. J. Russell. Soil Survey of Harrison County, Iowa. Washington, D.C.: G.P.O., 1928.

MLA (9th ed.) Citation

Benton, T. H., and N. J. Russell. Soil Survey of Harrison County, Iowa. G.P.O., 1928.