Mardzelah Makhsin, Sawan @ Mohammad Syawal Narawi, Nor Hasimah Ismail. “Evaluation of Mobile Learning Application in Hisbah Reflection Al-Nafs Among Islamic Spirituality Students”. International Journal of Advanced Science and Technology, Vol. 29, no. 4s, June 2020, pp. 2720 -27, http://sersc.org/journals/index.php/IJAST/article/view/21050.