SAPTIANY, S. G. .; WIDAGDO, C. S.; ISTIFARY, A. J.; MUSTOFA, A. Gamification with natural language processing: A pathway to improved English speaking for EFL students. Celtic : A Journal of Culture, English Language Teaching, Literature and Linguistics, [S. l.], v. 12, n. 2, p. 1106–1120, 2025. DOI: 10.22219/celtic.v12i2.42320. Disponível em: https://ejournal.umm.ac.id/index.php/celtic/article/view/42320. Acesso em: 6 jun. 2026.