DUONG, T. .; SUPPASETSEREE, S. . The Effects of an Artificial Intelligence Voice Chatbot on Improving Vietnamese Undergraduate Students’ English Speaking Skills. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 23, n. 3, p. 293–321, 2024. Disponível em: http://ijlter.net/index.php/ijlter/article/view/1896. Acesso em: 8 jun. 2026.