Gharami, R. C., T. Gayen, S. Roy, and P. Kumar. “Angina Bullosa Hemorrhagica: An Idiopathic Intraoral Blistering Disorder”. Journal of Pakistan Association of Dermatologists, vol. 23, no. 1, Dec. 2016, pp. 110-2, https://www.jpad.com.pk/index.php/jpad/article/view/276.