Cita APA (7th ed.)
Smith, J. F. Geology of the Sierra Blanca Area, Hudspeth County, Texas.
Cita Chicago (17th ed.)
Smith, J. Fred. Geology of the Sierra Blanca Area, Hudspeth County, Texas.
Cita MLA (9th ed.)
Smith, J. Fred. Geology of the Sierra Blanca Area, Hudspeth County, Texas.
Atenció: Aquestes cites poden no estar 100% correctes.