American Water Works Association & ebrary, Inc. (2001). Emergency planning for water utilities (4th ed.). American Water Works Association.
Chicago-viite (17. p.)American Water Works Association ja Inc ebrary. Emergency Planning for Water Utilities. 4th ed. Denver, Colo.: American Water Works Association, 2001.
MLA-viite (9. p.)American Water Works Association ja Inc ebrary. Emergency Planning for Water Utilities. 4th ed. American Water Works Association, 2001.
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