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.
Citación estilo ChicagoNational Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region and Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. Washington, DC: National Academies Press, 2005.
Cita MLANational Research Council (U.S.). Committee on Water Quality Improvement for the Pittsburgh Region and Inc ebrary. Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania. National Academies Press, 2005.
Warning: These citations may not always be 100% accurate.