Mardizal, Jonni, et al. “Beyond Points and Badges: How Mobile-Based Gamification Drives Multidimensional Engagement to Improve Learning Outcomes in Engineering Education”. International Journal of Online and Biomedical Engineering (iJOE), vol. 22, no. 10, Oct. 2026, pp. pp. 4–21, doi:10.3991/ijoe.v22i10.61757.