APA (7th ed.) Citation

Geological Survey (U.S.). (2012). Grays Well NE quadrangle, California--Arizona--Baja California Norte: 7.5-minute series. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Grays Well NE Quadrangle, California--Arizona--Baja California Norte: 7.5-minute Series. [Reston, Va.]: U.S. Department of the Interior, U.S. Geological Survey, 2012.

MLA (9th ed.) Citation

Geological Survey (U.S.). Grays Well NE Quadrangle, California--Arizona--Baja California Norte: 7.5-minute Series. U.S. Department of the Interior, U.S. Geological Survey, 2012.