APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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