(1978). Oregon's statewide assessment of nonpoint source problems. State of Oregon, Dept. of Environmental Quality, Water Quality Program.
Chicago-Zitierstil (17. Ausg.)Oregon's Statewide Assessment of Nonpoint Source Problems. Portland, Oregon: State of Oregon, Dept. of Environmental Quality, Water Quality Program, 1978.
MLA-Zitierstil (9. Ausg.)Oregon's Statewide Assessment of Nonpoint Source Problems. State of Oregon, Dept. of Environmental Quality, Water Quality Program, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.