Citazione Stile APA (7a Edizione)

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.

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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