Kafri, U., and Ben-Asher, J., 1978, Computer estimates of natural recharge through soils in southern Arizona, U.S.A.: Journal of Hydrology, v. 38, p. 125-138.
Kafri, U., and Ben-Asher, J., 1976, Evaluation of recharge through soils in a mountain region - A case study on the Empire and the Sonoita basins, in Chery, D.L., Jr., ed., Hydrology and water resources in Arizona and the Southwest, V. 6: American Water Resources Association, Arizona Section, and Arizona Academy of Science, Hydrology Section, Annual Meeting, Tucson, Ariz., 1976, Proceedings, p. 203-213.
Hildenbrand, T.G., Simpson, R.W., Godson, R.H., and Kane, M.F., 1982, Digital colored residual and regional Bouguer gravity maps of the conterminous United States: U.S. Geological Survey Open-File Report 82-0284, 31 p.
Harwood, Gerald, and DeCook, K.J., eds., 1979, Hydrology and water resources in Arizona and the Southwest, V. 9: American Water Resources Association, Arizona Section, and Arizona Academy of Science, Hydrology Section, Annual Meeting, Tempe, Ariz., 1979, Proceedings, 173 p.
Harshbarger, J.W., Lewis, D.D., Skibitzke, H.E., Heckler, W.L., and Kister, L.R., revised by H.L. Baldwin, 1966, Arizona water: U.S. Geological Survey Water-Supply Paper 1648, 85 p.
Witcher, J.C., Stone, Claudia, and Hahman, W.R., Sr., 1982, Geothermal resources of Arizona: Arizona Bureau of Geology and Mineral Technology [also listed as Arizona Geological Survey Map 15-2], 1 sheet, scale 1:500,000.
Freethey, G.W., Pool, D.R., Anderson, T.W., and Tucci, Patrick, 1986, Description and generalized distribution of aquifer materials in the alluvial basins of Arizona and adjacent parts of California and New Mexico: U.S. Geological Survey Hydrologic Investigations Atlas HA-663, 4 sheets, scale 1:500,000.
Feth, J.H., 1954, Geologic and ground-water reconnaissance of the Patagonia area, Arizona: U.S. Geological Survey Ground-Water Branch Mimeograph Report, 12 p.
Davis, R.W., 1971, An analysis of gravity data from the Tucson basin, Arizona: Arizona Geological Society Digest, v. 9, p. 103-121.
Davidson, E.S., 1979, Summary appraisals of the nation's ground-water resources - Lower Colorado region: U.S. Geological Survey Professional Paper 813-R, 23 p., 3 sheets, scale 1:1,000,000.