Cite
MLA (8th Edition)
Heathsville Quadrangle, Virginia--Maryland: 7.5-Minute Series. U.S. Department of the Interior, U.S. Geological Survey, 2022.
APA (7th Edition)
Heathsville quadrangle, Virginia--Maryland: 7.5-minute series. (2022). U.S. Department of the Interior, U.S. Geological Survey.
Chicago (17th Edition)
“Heathsville Quadrangle, Virginia--Maryland : 7.5-Minute Series.” Reston, Va.: U.S. Department of the Interior, U.S. Geological Survey, 2011.