VÁSCONEZ MERA , P. L.; GARCÍA LEÓN , E. P.; GONZÁLEZ QUINTO , M. G.; LEY LEIVA , N. V. Innovation in english language teaching: Chatbots based on artificial intelligence to improve oral expression skills. Revista Pertinencia Académica. ISSN 2588-1019, [S. l.], v. 10, n. 1, p. 166–191, 2026. Disponível em: https://revistas.utb.edu.ec/index.php/rpa/article/view/4152. Acesso em: 20 abr. 2026.