APA (7th ed.) Citation

McMahon, P. B. (2012). Use of classes based on redox and groundwater age to characterize the susceptibility of principal aquifers to changes in nitrate concentrations, 1991 to 2010. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

McMahon, Peter B. Use of Classes Based on Redox and Groundwater Age to Characterize the Susceptibility of Principal Aquifers to Changes in Nitrate Concentrations, 1991 to 2010. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2012.

MLA (9th ed.) Citation

McMahon, Peter B. Use of Classes Based on Redox and Groundwater Age to Characterize the Susceptibility of Principal Aquifers to Changes in Nitrate Concentrations, 1991 to 2010. U.S. Department of the Interior, U.S. Geological Survey, 2012.