Drinking Water Academy (U.S.). (2002). Drinking water resources: A collection of drinking water reference documents & materials. Environmental Protection Agency.
Chicago-Zitierstil (17. Ausg.)Drinking Water Academy (U.S.). Drinking Water Resources: A Collection of Drinking Water Reference Documents & Materials. Washington, D.C: Environmental Protection Agency, 2002.
MLA-Zitierstil (9. Ausg.)Drinking Water Academy (U.S.). Drinking Water Resources: A Collection of Drinking Water Reference Documents & Materials. Environmental Protection Agency, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.