APA Citation

United States. Soil Conservation Service., Colorado Agricultural Experiment Station., & Amen, A. E. (1977). Soil survey of Logan County, Colorado. [Washington]: The Service.

Chicago Style Citation

United States. Soil Conservation Service., Colorado Agricultural Experiment Station, and Alan E. Amen. Soil Survey of Logan County, Colorado. [Washington]: The Service, 1977.

MLA Citation

United States. Soil Conservation Service., Colorado Agricultural Experiment Station, and Alan E. Amen. Soil Survey of Logan County, Colorado. [Washington]: The Service, 1977.

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