GRESSICK, J.; LANGSTON, J. B. The Guilded Classroom: Using Gamification to Engage and Motivate Undergraduates. Journal of the Scholarship of Teaching and Learning, [S. l.], v. 17, n. 3, p. 109–123, 2017. DOI: 10.14434/v17i3.22119. Disponível em: https://scholarworks.iu.edu/journals/index.php/josotl/article/view/22119. Acesso em: 30 jul. 2021.