APA (7th ed.) Citation

Keenan, S. C. (1998). Soil survey of Polk County, North Carolina. The Service.

Chicago Style (17th ed.) Citation

Keenan, Scott C. Soil Survey of Polk County, North Carolina. [Washington, D.C.?]: The Service, 1998.

MLA (9th ed.) Citation

Keenan, Scott C. Soil Survey of Polk County, North Carolina. The Service, 1998.

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