Maham Sheikh, Abdul Hafeez Muhammad, Quadri Noorul hasan Naveed. Enhancing Usability of E-Learning Platform: A Case Study of Khan Academy. ojs [Internet]. 2021May1 [cited 2026Jul.25];4(2):40-. Available from: https://www.ojs.sjesr.org.pk/index.php/ojs/article/view/672