Ahmmadi, W. N., M. Ekosusilo, and H. K. Putra. “Using Gamification Applications to Increase The Student’s Learning Activity in Digital Simulation Subjects”. Indonesian Journal of Instructional Media and Model, vol. 4, no. 2, Nov. 2022, pp. 78-86, doi:10.32585/ijimm.v4i2.2856.