O'Neill Hills quadrangle, Arizona--Sonora : 7.5-minute series

MLA

Geological Survey (U.S.). O'Neill Hills quadrangle, Arizona--Sonora : 7.5-minute series. [Reston, Virginia] : U.S. Department of the Interior, U.S. Geological Survey, 2011.

APA

Geological Survey (U.S.). (2011). O'Neill Hills quadrangle, Arizona--Sonora : 7.5-minute series. [Reston, Virginia] : U.S. Department of the Interior, U.S. Geological Survey.

Chicago

Geological Survey (U.S.). O'Neill Hills quadrangle, Arizona--Sonora : 7.5-minute series. [Reston, Virginia] : U.S. Department of the Interior, U.S. Geological Survey, 2011.