1. "Optical Crystallography";Wahlstrom,1943
2. "Elements of Optical Mineralogy";Winchell,1937
3. "Handbook of Chemical Microscopy";Chamot,1938
4. "Crystals and the Polarizing Microscope";Hartshorne,1950
5. "The Microscopic Determination of Non-Opaque Minerals";Larsen,1934