APA (7th ed.) Citation

Duigon, M. T., & Dine, J. R. (1991). Water resources of Washington County, Maryland. Dept. of Natural Resources, Maryland Geological Survey.

Chicago Style (17th ed.) Citation

Duigon, Mark T., and James R. Dine. Water Resources of Washington County, Maryland. [Maryland]: Dept. of Natural Resources, Maryland Geological Survey, 1991.

MLA (9th ed.) Citation

Duigon, Mark T., and James R. Dine. Water Resources of Washington County, Maryland. Dept. of Natural Resources, Maryland Geological Survey, 1991.