Cita APA (7th ed.)
ebrary, Inc, & American Water Works Association. (2006). Water conservation programs: A planning manual. American Water Works Association.
Cita Chicago (17th ed.)
ebrary, Inc, i American Water Works Association. Water Conservation Programs: A Planning Manual. Denver, CO: American Water Works Association, 2006.
Cita MLA (9th ed.)
ebrary, Inc, i American Water Works Association. Water Conservation Programs: A Planning Manual. American Water Works Association, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.