1. Wikipedia. “Standard of Practice.”
2. The standard series of intra oral photographs;Goodlin;Univ Tor Dent J,1979
3. Making good images perfect DVD collection;Spear,2008
4. The complete guide to dental photography;Goodlin,1987
5. Facial morphology as determined by anthropometry: keeping it simple;Ward;J Craniofac Genet Dev Biol,1989