American Water Works Association & ebrary, Inc. (2002). Safety practices for water utilities (6th ed.). American Water Works Association.
Citação do estilo Chicago (17ª ed.)American Water Works Association e Inc ebrary. Safety Practices for Water Utilities. 6th ed. Denver, CO: American Water Works Association, 2002.
Citação MLA (9ª ed.)American Water Works Association e Inc ebrary. Safety Practices for Water Utilities. 6th ed. American Water Works Association, 2002.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.