APA-ийн эшлэл(7 дахь хэвлэлт)

National Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region & ebrary, Inc. (2005). Regional cooperation for water quality improvement in southwestern Pennsylvania. National Academies Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

National Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region ба Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. Washington, DC: National Academies Press, 2005.

MLA -ийн эшлэл (9 дэх хэвлэлт)

National Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region ба Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. National Academies Press, 2005.