APA (7th ed.) Citation

Cornwall, H. R., & Krieger, M. L. H. (1978). Geologic map of the El Capitan Mountain quadrangle, Gila and Pinal counties, Arizona. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Cornwall, Henry R., and Medora Louise Hooper Krieger. Geologic Map of the El Capitan Mountain Quadrangle, Gila and Pinal Counties, Arizona. Reston, Va.: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Cornwall, Henry R., and Medora Louise Hooper Krieger. Geologic Map of the El Capitan Mountain Quadrangle, Gila and Pinal Counties, Arizona. U.S. Geological Survey, 1978.