JARRÍN, X.; KIM, C. Improving speaking skill using the speaking practice tool Spacedeck. Espirales Revista Multidisciplinaria de investigación, [S. l.], 2019. DOI: 10.31876/er.v3i30.619. Disponível em: https://www.revistaespirales.com/index.php/es/article/view/619. Acesso em: 12 jul. 2026.