Geological Survey (U.S.), Drewes, H., & Brooks, W. E. (1988). Geologic map and cross sections of the Pedregosa Mountains, Cochise County, Arizona. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Harald Drewes, and William E. Brooks. Geologic Map and Cross Sections of the Pedregosa Mountains, Cochise County, Arizona. Reston, Va.: The Survey, 1988.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geologic Map and Cross Sections of the Pedregosa Mountains, Cochise County, Arizona. The Survey, 1988.
Warning: These citations may not always be 100% accurate.