APA (7th ed.) Citation

Mahler, B. J. (2011). Recent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Mahler, B. J. Recent (2008-10) Concentrations and Isotopic Compositions of Nitrate and Concentrations of Wastewater Compounds in the Barton Springs Zone, South-central Texas, and Their Potential Relation to Urban Development in the Contributing Zone. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2011.

MLA (9th ed.) Citation

Mahler, B. J. Recent (2008-10) Concentrations and Isotopic Compositions of Nitrate and Concentrations of Wastewater Compounds in the Barton Springs Zone, South-central Texas, and Their Potential Relation to Urban Development in the Contributing Zone. U.S. Department of the Interior, U.S. Geological Survey, 2011.