Kelly, V. J., Lynch, D. D., & Rounds, S. A. (1999). Sources and transport of phosporus and nitrogen during low-flow conditions in the Tualatin River, Oregon: 1991 - 93. US Geological Survey.
Chicago-Zitierstil (17. Ausg.)Kelly, Valerie J., Dennis D. Lynch, und Stewart A. Rounds. Sources and Transport of Phosporus and Nitrogen During Low-flow Conditions in the Tualatin River, Oregon: 1991 - 93. Denver: US Geological Survey, 1999.
MLA-Zitierstil (9. Ausg.)Kelly, Valerie J., et al. Sources and Transport of Phosporus and Nitrogen During Low-flow Conditions in the Tualatin River, Oregon: 1991 - 93. US Geological Survey, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.