1. Pocock G, Richards CD. Human Physiology: The Basis of Medicine Oxford Core Texts. 4th ed. Oxford University Press; Oxford, United Kingdom; 2013. p. 586.
2. Kumar GS, Bhaskar SN. Orban's Oral Histology and Embryology. 14th ed. Elsevier; India; 2015; p. 194-239.
3. Berkovitz B, Holl G, Moxham B. Oral Anatomy, Histology and Embryology. 4th ed. Mosby/Elsevier; Edinburgh; 2015. p 223-51.
4. Oral dermatological conditions: A clinical study;Roy;Indian J Otolaryngol Head Neck Surg,2013
5. Oral squamous cell carcinoma: A clinicopathological study on 194 cases in northeastern Brazil.A cross-sectional retrospective study;Leite;Sao Paulo Med J,2018