Bansal, Manish, and Tulika Rai. “Hyperpigmented Plaque With Raised Border at Right Angle of Mouth Involving Oral Mucosa”. Journal of Pakistan Association of Dermatologists 23, no. 4 (December 16, 2016): 465–466. Accessed February 26, 2026. https://www.jpad.com.pk/index.php/jpad/article/view/331.