APA (7th ed.) Citation

Purkey, T. H. (1995). Soil survey of Newaygo County, Michigan. U.S. Department of Agriculture, Soil Conservation Service.

Chicago Style (17th ed.) Citation

Purkey, Thomas H. Soil Survey of Newaygo County, Michigan. [Washington, D.C.?]: U.S. Department of Agriculture, Soil Conservation Service, 1995.

MLA (9th ed.) Citation

Purkey, Thomas H. Soil Survey of Newaygo County, Michigan. U.S. Department of Agriculture, Soil Conservation Service, 1995.