Rauf, N. K., M. Anis-ul-Haque, and R. Aftab. “Parental Stress and Autism Differences in Perceived Stress and Coping Behavior”. Journal of Pakistan Psychiatric Society, Vol. 14, no. 02, June 2017, pp. 8-11, https://jpps.pk/index.php/journal/article/view/479.