Hoornbeek. Water Pollution Policies and the American States. State University of New York Press.
Lua i Stíl Chicago (17ú heag.)Hoornbeek. Water Pollution Policies and the American States. State University of New York Press.
Lua MLA (8ú heag.)Hoornbeek. Water Pollution Policies and the American States. State University of New York Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.