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.
Цитирование в стиле Чикаго (17-е изд.)National Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region и Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. Washington, DC: National Academies Press, 2005.
Цитирование MLA (9-е изд.)National Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region и Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. National Academies Press, 2005.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.