1. A textbook of oral pathology;Shafer,1984
2. Clinical outline of oral pathology: Diagnosis and treatment;Ebersole,1978
3. The fibrous epulis and related lesions;Lee;J Periodontol,1968
4. Pyogenic granuloma of the oral cavity: statistical analysis of its clinical features;Angelopoulos;J Oral Surg,1971
5. Peripheral giant cell granuloma: review of 720 cases;Giansanti;J Oral Surg,1969