APA (7th ed.) Citation

Drake, A. A. (1998). Geologic map of the Kensington quadrangle, Montgomery County, Maryland. The Survey.

Chicago Style (17th ed.) Citation

Drake, Avery Ala. Geologic Map of the Kensington Quadrangle, Montgomery County, Maryland. Reston, Va.: The Survey, 1998.

MLA (9th ed.) Citation

Drake, Avery Ala. Geologic Map of the Kensington Quadrangle, Montgomery County, Maryland. The Survey, 1998.

Warning: These citations may not always be 100% accurate.