APA (7th ed.) Citation

Patrick, R., Ford, E., Quarles, J., & Pye, V. I. (1987). Groundwater contamination in the United States (2nd ed.). University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Patrick, Ruth, Emily Ford, John Quarles, and Veronica I. Pye. Groundwater Contamination in the United States. 2nd ed. Philadelphia: University of Pennsylvania Press, 1987.

MLA (9th ed.) Citation

Patrick, Ruth, et al. Groundwater Contamination in the United States. 2nd ed. University of Pennsylvania Press, 1987.