Arifin, V., V. Handayani, L. Wardhani, H. Suseno, and S. Masruroh. “User Interface and Exprience Gamification-Based E-Learning With Design Science Research Methodology”. MATRIK : Jurnal Manajemen, Teknik Informatika Dan Rekayasa Komputer, Vol. 22, no. 1, Nov. 2022, pp. 165-76, doi:https://doi.org/10.30812/matrik.v22i1.2427.