Arizona Department of Water Resources, 2000, Verde River watershed study: Arizona Department of Water Resources,  p.
Norman, Laura, 2004, Binational digital soils map of the Ambos Nogales watershed, southern Arizona and northern Sonora, Mexico: U.S. Geological Survey Open-File Report 2004-1335, 39p.
Jackson, G.W., 1990, The Toroweap Fault: One of the most active faults in Arizona: Arizona Geology [Arizona Geological Survey], p. 7-10.
De Wall, A.A., 1981, Soil survey of Gila-Duncan area, Arizona, parts of Graham and Greenlee Counties: U.S. Department of Agriculture, Soil Conservation Service and U.S. Department of the Interior, Bureau of Land Management, in cooperation with Arizona Agricultural Experiment Station, 174 p., 79 sheets, scale 1:24,000.
Piety, L.A., and Anderson, L.W., 1988, Distribution, characteristics, and eestimated ages of Quaternary(?) deposits in the Tonto Basin, central Arizona, in Anderson, Larry, and Piety, Lucy, eds., Field-Trip Guidebook to the Tonto Basin: Geomorphology, Quaternary Geology, Tertiary Basin Development, Archaeology, and Engineering Geology: Friends of the Pleistocene, Rocky Mountain Cell, p. 57-78.
Biggs, T.H., Leighty, R.S., Skotnicki, S.J., and Pearthree, P.A., 1999, Geology and geomorphology of the San Bernardino Valley, southeastern Arizona [Apache, Skull Canyon, Pedregosa Mountains East, Paramore Crater, Skeleton Canyon, College Peaks, Cinder Hill, Lazy J Ranch, Guadalupe Spring, East of Douglas, San Bernardino Ranch, West of Guadalupe Canyon, and Guadalupe Canyon 7.5 min]: Arizona Geological Survey Open-File Report 99-19, 20 p., 3 sheets, scale 1:32,000.
Huckleberry, Gary, 1997, Rates of Holocene soil formation in south-central Arizona: Arizona Geological Survey Open-File Report 97-07, 27 p.
Naiman, Zachary, Quade, Jay, and Patchett, P.J., 2000, Isotopic evidence for eolian recycling of pedogenic carbonate and variations in carbonate dust sources throughout the southwest United States: Geochimica et Cosmochimica Acta, v. 64, no. 18, p. 3099-3109.
McGuire, C.E., 1997, Soil Survey of San Pedro Valley, Arizona - An interim report from the Soil Survey of Cochise County, Douglas-Tombstone part: U.S. Department of Agriculture, Soil Conservation Service, 343 p., 22 sheets, scale 1:24,000.