KUO, Y.-H. An Essay Review of Teaching Tools for the 21st Century. Resenhas Educativas/ANPEd, [S. l.], 2015. DOI: 10.14507/er.v0.891. Disponível em: https://edrev.asu.edu/edrev/index.php/ER/article/view/891. Acesso em: 3 jul. 2024.