APA (7th ed.) Citation

Gerhart, J. M., & Blomquist, J. D. (1995). Selected trace-element and organic contaminants in the streambed sediments of the Potomac River basin, August 1992. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gerhart, James M., and Joel D. Blomquist. Selected Trace-element and Organic Contaminants in the Streambed Sediments of the Potomac River Basin, August 1992. [Towson, Md.]: U.S. Geological Survey, 1995.

MLA (9th ed.) Citation

Gerhart, James M., and Joel D. Blomquist. Selected Trace-element and Organic Contaminants in the Streambed Sediments of the Potomac River Basin, August 1992. U.S. Geological Survey, 1995.