«Innovation in english language teaching: Chatbots based on artificial intelligence to improve oral expression skills». Revista Pertinencia Académica. ISSN 2588-1019 10, no. 1 (enero 4, 2026): 166–191. Accedido septiembre 22, 2026. https://revistas.utb.edu.ec/index.php/rpa/article/view/4152.