1. A textbook of oral pathology;Shafer,1974
2. Histopathology of the teeth, and their surrounding structures;Kronfield,1933
3. Pathology of the dental pulp;Hill;J Am Dent Assoc,1934
4. Synopsis of oral pathology;Bhaskar,1981
5. Periodontal disease, bacteria and pulpal Histopathology;Langelend;Oral Surg,1974