DE FRANCISCO VELA, S.; CASAIS, M. Billy Cash: Digital piggy bank for meaningful saving behavior. RChD: creación y pensamiento, [S. l.], v. 3, n. 4, 2018. DOI: 10.5354/0719-837X.2018.49520. Disponível em: https://rchd.uchile.cl/index.php/RChDCP/article/view/49520. Acesso em: 7 dic. 2022.