Kelly, V. J. (1999). Sources and transport of phosphorous and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93. U.S. Geological Survey.
Chicago Style (17th ed.) CitationKelly, Valerie J. Sources and Transport of Phosphorous and Nitrogen During Low-flow Conditions in the Tualatin River, Oregon, 1991-93. Reston, Virginia: U.S. Geological Survey, 1999.
MLA (9th ed.) CitationKelly, Valerie J. Sources and Transport of Phosphorous and Nitrogen During Low-flow Conditions in the Tualatin River, Oregon, 1991-93. U.S. Geological Survey, 1999.
Warning: These citations may not always be 100% accurate.