Khan, Muhammad Firaz, Mian Mukhtar ul Haq, Asadullah Irfan, and Naila Riaz Awan. 2013. “Drug Misuse in People With Learning Disability Presenting to A Drug Abuse Treatment Center”. Journal of Pakistan Psychiatric Society 10 (02), 96-98. https://jpps.pk/index.php/journal/article/view/929.