APA

American Water Works Association, . (19681975). AWWA yearbook / American Water Works Association. New York, NY: .

Chicago

American Water Works Association, . 19681975. AWWA yearbook / American Water Works Association. New York, NY: .

Harvard

American Water Works Association, . (19681975). AWWA yearbook / American Water Works Association. New York, NY: .

MLA

American Water Works Association, . AWWA yearbook / American Water Works Association. New York, NY: . 19681975.