JOSEPH, SAMUEL R. H., and MARIA UTHER. “MOBILE DEVICES FOR LANGUAGE LEARNING: MULTIMEDIA APPROACHES”. Research and Practice in Technology Enhanced Learning 4, no. 1 (March 1, 2009): 7–32. Accessed November 27, 2024. https://rptel.apsce.net/index.php/RPTEL/article/view/2009-04001.