APA (7th ed.) Citation

Richardson, D. L., & Brockman, A. R. (1992). Hydrogeology and water quality of the shallow ground-water system in eastern York County, Virginia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Richardson, Donna L., and Allen R. Brockman. Hydrogeology and Water Quality of the Shallow Ground-water System in Eastern York County, Virginia. Richmond, Virginia: U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Richardson, Donna L., and Allen R. Brockman. Hydrogeology and Water Quality of the Shallow Ground-water System in Eastern York County, Virginia. U.S. Geological Survey, 1992.