Virginia. Division of Soil and Water Conservation, National Cartography and Geographic Information Systems Center (U.S.), Virginia. Department of Environmental Quality, & United States. Natural Resources Conservation Service. (1995). Hydrologic units: Sussex County, [Virginia] (183) (Rev. January 1995.). USDA-NRCS-National Cartographic and GIS Center ; The Division [distributor].
Chicago Style (17th ed.) CitationVirginia. Division of Soil and Water Conservation, National Cartography and Geographic Information Systems Center (U.S.), Virginia. Department of Environmental Quality, and United States. Natural Resources Conservation Service. Hydrologic Units: Sussex County, [Virginia] (183). Rev. January 1995. Ft. Worth, TX : Richmond, Va.: USDA-NRCS-National Cartographic and GIS Center ; The Division [distributor], 1995.
MLA (9th ed.) CitationVirginia. Division of Soil and Water Conservation, et al. Hydrologic Units: Sussex County, [Virginia] (183). Rev. January 1995. USDA-NRCS-National Cartographic and GIS Center ; The Division [distributor], 1995.