Aguilar Cruz, Paola Julie, and Henry Alberto Álvarez Guayara. “A Serious Game to Learn English: The Case of Bethe1Challenge”. International Journal of Serious Games 8, no. 4 (December 4, 2021): 65–80. Accessed January 19, 2022. https://journal.seriousgamessociety.org/index.php/IJSG/article/view/448.