APA (7th ed.) Citation

Ryberg, K. R. (2011). Trends in pesticide concentrations in urban streams in the United States, 1992-2008. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Ryberg, Karen R. Trends in Pesticide Concentrations in Urban Streams in the United States, 1992-2008. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2011.

MLA (9th ed.) Citation

Ryberg, Karen R. Trends in Pesticide Concentrations in Urban Streams in the United States, 1992-2008. U.S. Department of the Interior, U.S. Geological Survey, 2011.