Reed, L. A., Koerkle, E. H., & Takita, C. S. (1997). Herbicide concentrations in and loads transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95. U.S. Geological Survey.
Chicago Style (17th ed.) CitationReed, Lloyd A., Edward H. Koerkle, and Charles S. Takita. Herbicide Concentrations in and Loads Transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95. Lemoyne, Pennsylvania: U.S. Geological Survey, 1997.
MLA (9th ed.) CitationReed, Lloyd A., et al. Herbicide Concentrations in and Loads Transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95. U.S. Geological Survey, 1997.
Warning: These citations may not always be 100% accurate.