APA (7th ed.) Citation

American Water Works Association. (1989). Groundwater (2nd ed.). American Water Works Association.

Chicago Style (17th ed.) Citation

American Water Works Association. Groundwater. 2nd ed. Denver, CO: American Water Works Association, 1989.

MLA (9th ed.) Citation

American Water Works Association. Groundwater. 2nd ed. American Water Works Association, 1989.

Warning: These citations may not always be 100% accurate.