Cite
MLA (8th Edition)
Gerhart, James M.. Design and Implementation of a Sampling Strategy for a Water-Quality Assessment of the Potomac River Basin. U.S. Geological Survey, 1996.
APA (7th Edition)
Gerhart, J. M. (1996). Design and implementation of a sampling strategy for a water-quality assessment of the Potomac River basin. U.S. Geological Survey.
Chicago (17th Edition)
Gerhart, James M. Design and Implementation of a Sampling Strategy for a Water-Quality Assessment of the Potomac River Basin. Baltimore, Maryland: U.S. Geological Survey, 1996.