References
- Andrews, L. F. (1972) The six keys to normal occlusion, American Journal of Orthodontics, 62, 296–309.
- Orton, H. S. (1966) An evaluation of five methods of derotating upper molar teeth, Dental Practitioner, 16, 279–286.
- Reynolds, J. M. and Arai, H. Y. (1973) Welcome to the World of Orthodontics, pp. 96–97, Lubbock, Texas: Zulaf Associates.
- Ricketts, R. M. (1972) Features of the Light Progressive Technique (No. 5), Rocky Mountain Dental Products Co.