United States. Soil Conservation Service, United States. Forest Service, & Virginia Polytechnic Institute and State University. (1985). Soil survey of Giles County, Virginia, southern and central parts. The Service.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service, United States. Forest Service, and Virginia Polytechnic Institute and State University. Soil Survey of Giles County, Virginia, Southern and Central Parts. [Washington, D.C.?]: The Service, 1985.
MLA (9th ed.) CitationUnited States. Soil Conservation Service, et al. Soil Survey of Giles County, Virginia, Southern and Central Parts. The Service, 1985.
Warning: These citations may not always be 100% accurate.