Comparing Voluntary and Mandatory Gameplay. International Journal of Serious Games, [S. l.], v. 3, n. 3, 2016. DOI: 10.17083/ijsg.v3i3.133. Disponível em: https://journal.seriousgamessociety.org/index.php/IJSG/article/view/133.. Acesso em: 11 oct. 2024.