1. Diagnostic Characteristics of the Paleozoic Formations of Southeastern Arizona;Bryant,1968
2. Two Aboriginal rock art pigments from Western Australia: their properties, use and durability;Clarke;Studies in Conservation,1976
3. Cornell, R.M., Schewertmann, U., 2003. The Iron Oxides. Wiley-VCH Verlag GmbH & Co., Weinheim.
4. Initial results of PIXE analysis on Northern Australian ochres;David;Australian Archaeology,1993
5. Mesozoic Rocks of Southern Arizona and Adjacent Areas, Arizona Geological Society Digest;Dickinson,1987