Ullah, M., N. A. Rana, A. Naeem, and K. Iqbal. “CROWN DILACERATION IN MANDIBULAR PERMANENT INCISOR - A CASE REPORT”. Pakistan Oral & Dental Journal, Vol. 38, no. 3, Nov. 2018, pp. 374-6, https://podj.com.pk/index.php/podj/article/view/292.