Hill, M. K. (2004). Understanding environmental pollution: Primer (Second edition.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Hill, Marquita K. Understanding Environmental Pollution: Primer. Second edition. New York: Cambridge University Press, 2004.
Lua MLA (9ú heag.)Hill, Marquita K. Understanding Environmental Pollution: Primer. Second edition. Cambridge University Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.