APA (7th ed.) Citation

Brockman, A. R., & Richardson, D. L. (1992). Hydrogeologic framework of the shallow aquifer system of York County, Virginia. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Brockman, Allen R., and Donna L. Richardson. Hydrogeologic Framework of the Shallow Aquifer System of York County, Virginia. Richmond, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Brockman, Allen R., and Donna L. Richardson. Hydrogeologic Framework of the Shallow Aquifer System of York County, Virginia. U.S. Dept. of the Interior, U.S. Geological Survey, 1992.