1. Occlusion—Observations on its Development From Infancy to Old Age;Friel;Int. J. Orthodontia,1927
2. Descriptive Anatomy of the Human Teeth;Black,1894
3. Litch's American System of Dentistry;Black,1886
4. Oral Rehabilitation;Sweitzer,1951
5. Form and Function in Teeth;Shaw;Int. J. Orthodontia,1924