APA (7th ed.) Citation

Sturm, R. H., & Gilbert, R. H. (1978). Soil survey of Marion County, Indiana. The Service.

Chicago Style (17th ed.) Citation

Sturm, Ralph H., and Richard H. Gilbert. Soil Survey of Marion County, Indiana. [Washington, D.C.]: The Service, 1978.

MLA (9th ed.) Citation

Sturm, Ralph H., and Richard H. Gilbert. Soil Survey of Marion County, Indiana. The Service, 1978.