American Water Works Association. (1989). Groundwater (2nd ed.). American Water Works Association.
Chicago Edition CitationAmerican Water Works Association. Groundwater. 2nd ed. Denver, CO: American Water Works Association, 1989.
MLA Edition CitationAmerican Water Works Association. Groundwater. 2nd ed. American Water Works Association, 1989.
Warning: These citations may not always be 100% accurate.