Cita APA

Kelly, V. J., Lynch, D. D., & Rounds, S. A. (1999). Sources and transport of phosphorus and nitrogen during low-flow conditions in theTualatin River, Oregon, 1991-93. Reston, Va.: U.S. Departamento of the Interior, Geological Survey.

Citación estilo Chicago

Kelly, Valerie J., Dennis D. Lynch, y Stewart A. Rounds. Sources and Transport of Phosphorus and Nitrogen During Low-flow Conditions in TheTualatin River, Oregon, 1991-93. Reston, Va.: U.S. Departamento of the Interior, Geological Survey, 1999.

Cita MLA

Kelly, Valerie J., Dennis D. Lynch, y Stewart A. Rounds. Sources and Transport of Phosphorus and Nitrogen During Low-flow Conditions in TheTualatin River, Oregon, 1991-93. Reston, Va.: U.S. Departamento of the Interior, Geological Survey, 1999.