Yun, D., and S.L. Stein. “Congenital Melanocytic Nevus of the Oral Mucosa”. European Journal of Pediatric Dermatology, vol. 20, no. 4, Dec. 2010, pp. 223-26, https://ejpd.migration.pkpps03.publicknowledgeproject.org/index.php/journal/article/view/618.