Heift, T. (2003) «Drag or Type, But Don’t Click: A Study on the Effectiveness of Different CALL Exercise Types», Canadian Journal of Applied Linguistics, 6(1), pp. 69–85. Disponible en: https://journals.lib.unb.ca/index.php/CJAL/article/view/19803 (Accedido: 3 julio 2024).