American Water Works Association. (2014). Simplified procedures for water examination (Sixth edition.). American Water Works Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)American Water Works Association. Simplified Procedures for Water Examination. Sixth edition. Denver, Colorado: American Water Works Association, 2014.
MLA -ийн эшлэл (9 дэх хэвлэлт)American Water Works Association. Simplified Procedures for Water Examination. Sixth edition. American Water Works Association, 2014.
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