APA (7th ed.) Citation

Drake, A. A. (1998). Geologic map of the Piedmont in the Beltsville, Laurel, and Washington East quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel Counties, Maryland, and the District of Columbia. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Drake, Avery Ala. Geologic Map of the Piedmont in the Beltsville, Laurel, and Washington East Quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel Counties, Maryland, and the District of Columbia. [Reston, Va.]: U.S. Department of the Interior, U.S. Geological Survey, 1998.

MLA (9th ed.) Citation

Drake, Avery Ala. Geologic Map of the Piedmont in the Beltsville, Laurel, and Washington East Quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel Counties, Maryland, and the District of Columbia. U.S. Department of the Interior, U.S. Geological Survey, 1998.