Cita APA (7a ed.)

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.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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