APA (7th ed.) Citation

Dideriksen, R. O., & Radatz, C. A. (2000). Soil survey of Polk County, Iowa. The Service.

Chicago Style (17th ed.) Citation

Dideriksen, Robert O., and Caryl A. Radatz. Soil Survey of Polk County, Iowa. [Washington, D.C.]: The Service, 2000.

MLA (9th ed.) Citation

Dideriksen, Robert O., and Caryl A. Radatz. Soil Survey of Polk County, Iowa. The Service, 2000.