PRAMUKANTORO, E. S.; YAHYA, W. Belajardisini : The E-learning Framework Based on Gamification Concept. Journal of Information Technology and Computer Science, [S. l.], v. 1, n. 1, p. 38–43, 2016. DOI: 10.25126/jitecs.2016116. Disponível em: https://jitecs.ub.ac.id/index.php/jitecs/article/view/6. Acesso em: 12 aug. 2022.