Mohd Noor, N., Mohamed Arip, M. A. S., Moh @ Hj Abdullah, E., & Yon, H. (2019). Measuring the Content Validity of MEPI using Content Validity Ratio. Journal of ICT in Education, 3, 81–88. Retrieved from https://ejournal.upsi.edu.my/index.php/JICTIE/article/view/2610