American Water Works Association & ebrary, Inc. (2002). Safety practices for water utilities (6th ed.). American Water Works Association.
芝加哥风格引文American Water Works Association 与 Inc ebrary. Safety Practices for Water Utilities. 6th ed. Denver, CO: American Water Works Association, 2002.
MLA引文American Water Works Association 与 Inc ebrary. Safety Practices for Water Utilities. 6th ed. American Water Works Association, 2002.
警告：这些引文格式不一定是100％准确.