APA (7th ed.) Citation

United States. Bureau of Soils & Iowa State College. Agricultural Experiment Station. (1921). Soil map, Iowa, Page County sheet. The Bureau.

Chicago Style (17th ed.) Citation

United States. Bureau of Soils and Iowa State College. Agricultural Experiment Station. Soil Map, Iowa, Page County Sheet. [Washington]: The Bureau, 1921.

MLA (8th ed.) Citation

United States. Bureau of Soils and Iowa State College. Agricultural Experiment Station. Soil Map, Iowa, Page County Sheet. The Bureau, 1921.

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