APA (7th ed.) Citation

Hodges, M. S. (1990). Soil survey of Macoupin County, Illinois. The Service.

Chicago Style (17th ed.) Citation

Hodges, Mack S. Soil Survey of Macoupin County, Illinois. [Washington, D.C.?]: The Service, 1990.

MLA (9th ed.) Citation

Hodges, Mack S. Soil Survey of Macoupin County, Illinois. The Service, 1990.