Rare case of pigmentation of the oral cavity: A case report. Indian Journal of Case Reports, [S. l.], v. 6, n. 3, p. 128–130, 2020. DOI: 10.32677/IJCR.2020.v06.i03.011. Disponível em: https://mansapublishers.com/index.php/ijcr/article/view/2247.. Acesso em: 9 apr. 2025.