1. A textbook of oral pathology;Shafer,1974
2. Talon cusp: a clinically significant anomaly;Mellor;Oral Surg,1979
3. Case report;Mitchel;Dent Cosmos,1892
4. Oral pathology;Spouge,1973
5. The distolingual groove in the maxillary lateral incisor; a periodontal hazard;Everett;J Periodontol,1972