Maham Sheikh, Abdul Hafeez Muhammad and Quadri Noorul hasan Naveed 2021. Enhancing Usability of E-Learning Platform: A Case Study of Khan Academy. sjesr. 4, 2 (May 2021), 40-50. DOI:https://doi.org/10.36902/sjesr-vol4-iss2-2021(40-50).