American Water Works Association & ebrary, Inc. (2002). Safety practices for water utilities (6th ed.). American Water Works Association.
Chicagoスタイル(17版)引用形式American Water Works Association , Inc ebrary. Safety Practices for Water Utilities. 6th ed. Denver, CO: American Water Works Association, 2002.
MLA(9版)引用形式American Water Works Association , Inc ebrary. Safety Practices for Water Utilities. 6th ed. American Water Works Association, 2002.
警告: この引用は必ずしも正確ではありません.