Kalkhoff, S. J. (2018). Transport of nitrogen and phosphorus in the Cedar River Basin, Iowa and Minnesota, 2000-15. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationKalkhoff, Stephen J. Transport of Nitrogen and Phosphorus in the Cedar River Basin, Iowa and Minnesota, 2000-15. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2018.
MLA (9th ed.) CitationKalkhoff, Stephen J. Transport of Nitrogen and Phosphorus in the Cedar River Basin, Iowa and Minnesota, 2000-15. U.S. Department of the Interior, U.S. Geological Survey, 2018.
Warning: These citations may not always be 100% accurate.