APA (7th ed.) Citation

United States. Soil Conservation Service. (1985). Soil survey of Isabella County, Michigan. Service.

Chicago Style (17th ed.) Citation

United States. Soil Conservation Service. Soil Survey of Isabella County, Michigan. [Washington, D.C.?]: Service, 1985.

MLA (9th ed.) Citation

United States. Soil Conservation Service. Soil Survey of Isabella County, Michigan. Service, 1985.

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