American Water Works Association & ebrary, Inc. (2005). Water utility management (2nd ed.). American Water Works Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)American Water Works Association ба Inc ebrary. Water Utility Management. 2nd ed. Denver, Colo.: American Water Works Association, 2005.
MLA -ийн эшлэл (9 дэх хэвлэлт)American Water Works Association ба Inc ebrary. Water Utility Management. 2nd ed. American Water Works Association, 2005.
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