APA (7th ed.) Citation

American Water Works Association. (1983). Dual water systems. American Water Works Association.

Chicago Style (17th ed.) Citation

American Water Works Association. Dual Water Systems. Denver, Colorado: American Water Works Association, 1983.

MLA (9th ed.) Citation

American Water Works Association. Dual Water Systems. American Water Works Association, 1983.

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