ONTANEDA REA, M.; SÁNCHEZ ROMÁN, J. L. Implementing backward design to improve students’ academic performance in EFL classes. Espirales Revista Multidisciplinaria de investigación, [S. l.], v. 3, n. 24, p. 42–50, 2019. DOI: 10.31876/re.v3i24.422. Disponível em: https://revistaespirales.consultorioampuero.com/index.php/es/article/view/422. Acesso em: 22 apr. 2026.