APA (7th ed.) Citation

Geological Survey (U.S.). (2011). Gibson Island quadrangle, Maryland--Anne Arundel Co.: 7.5-minute series. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Gibson Island Quadrangle, Maryland--Anne Arundel Co.: 7.5-minute Series. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 2011.

MLA (9th ed.) Citation

Geological Survey (U.S.). Gibson Island Quadrangle, Maryland--Anne Arundel Co.: 7.5-minute Series. U.S. Department of the Interior, U.S. Geological Survey, 2011.