“Revisiting the Relationship Between Ability and Sheepskin Effects of Schooling on Individual Earnings: The Case of Pakistan”. Pakistan Journal of Commerce and Social Sciences (ISSN 1997-8553) 12, no. 2 (June 30, 2018): 419–442. Accessed October 16, 2025. https://jes.ac.pk/index.php/jes/article/view/261.