Rehmat Ali, Zainab, Asma Kanwal, and Ghazala Ishrat. “Factors Affecting the Uniformity of Sign Language: Perceptions of Teachers of Students With Hearing Impairment”. Annals of Human and Social Sciences 4, no. 1 (January 9, 2023): 12–24. Accessed April 26, 2024. https://ojs.ahss.org.pk/journal/article/view/86.