APA (7th ed.) Citation

Kolpin, D. W., & Thurman, E. M. (1995). Postflood occurrence of selected agricultural chemicals and volatile organic compounds in near-surface unconsolidated aquifers in the upper Mississippi River Basin, 1993. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Kolpin, Dana W., and E. M. Thurman. Postflood Occurrence of Selected Agricultural Chemicals and Volatile Organic Compounds in Near-surface Unconsolidated Aquifers in the Upper Mississippi River Basin, 1993. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 1995.

MLA (9th ed.) Citation

Kolpin, Dana W., and E. M. Thurman. Postflood Occurrence of Selected Agricultural Chemicals and Volatile Organic Compounds in Near-surface Unconsolidated Aquifers in the Upper Mississippi River Basin, 1993. U.S. Department of the Interior, U.S. Geological Survey, 1995.