APA (7th ed.) Citation

Pennsylvania. Department of Environmental Protection, Geological Survey (U.S.), & Loper, C. A. (2007). Concentrations of selected pharmaceuticals and antibiotics in south-central Pennsylvania waters, March through September 2006. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Pennsylvania. Department of Environmental Protection, Geological Survey (U.S.), and Connie A. Loper. Concentrations of Selected Pharmaceuticals and Antibiotics in South-central Pennsylvania Waters, March Through September 2006. [Reston, Va.]: U.S. Geological Survey, 2007.

MLA (9th ed.) Citation

Pennsylvania. Department of Environmental Protection, et al. Concentrations of Selected Pharmaceuticals and Antibiotics in South-central Pennsylvania Waters, March Through September 2006. U.S. Geological Survey, 2007.