APA (7th ed.) Citation

Zipper, C. E. (1992). Surface water quality trends in southwestern Virginia, 1970-1989. Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University.

Chicago Style (17th ed.) Citation

Zipper, Carl E. Surface Water Quality Trends in Southwestern Virginia, 1970-1989. Blacksburg: Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1992.

MLA (9th ed.) Citation

Zipper, Carl E. Surface Water Quality Trends in Southwestern Virginia, 1970-1989. Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1992.