(2014). Safety management for utilities (Seventh edition.). American Water Works Association.
Cita Chicago (17th ed.)Safety Management for Utilities. Seventh edition. Denver, Colorado: American Water Works Association, 2014.
Cita MLA (9th ed.)Safety Management for Utilities. Seventh edition. American Water Works Association, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.