APA (7th ed.) Citation

Patrick, R., Ford, E., & Quarles, J. (1987). Groundwater contamination in the United States (2. ed.). Univ. of Pennsylvania Pr.

Chicago Style (17th ed.) Citation

Patrick, Ruth, Emily Ford, and John Quarles. Groundwater Contamination in the United States. 2. ed. Philadelphia: Univ. of Pennsylvania Pr, 1987.

MLA (9th ed.) Citation

Patrick, Ruth, et al. Groundwater Contamination in the United States. 2. ed. Univ. of Pennsylvania Pr, 1987.