Hummerite from selected localities.
||Page, L. R.; Stocking, H. E.; Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp1243-267|
|Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 121.|
|Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 253; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 79.|