Sitepu, E. ., L. M. Natasya, J. W. Sitopu, M. Mardiati, and T. . Charolina. “Enhancing Student Engagement and Academic Performance through Gamification-Based Learning in Elementary Mathematics Education”. Journal Basic Science and Technology, vol. 13, no. 3, Oct. 2024, pp. 121-3, https://iocscience.org/ejournal/index.php/JBST/article/view/5661.