APA Citation

O'Connor, T., & Kristoff, J. M. (1990). Soil survey of Sioux County, Iowa. [Washington, D.C.]: The Service.

Chicago Style Citation

O'Connor, Thomas, and Joseph M. Kristoff. Soil Survey of Sioux County, Iowa. [Washington, D.C.]: The Service, 1990.

MLA Citation

O'Connor, Thomas, and Joseph M. Kristoff. Soil Survey of Sioux County, Iowa. [Washington, D.C.]: The Service, 1990.

Warning: These citations may not always be 100% accurate.