BUKIT, H.; PANGARIBUAN, J. J.; SARAGIH, M. The Students’ Ability in Speaking By Using Duolingo Aplication at Seventh Grade Students of SMP Singosari Delitua. Journal of Applied Linguistics , [S. l.], v. 3, n. 2, p. 93–99, 2024. Disponível em: https://www.journal.eltaorganization.org/index.php/joal/article/view/197. Acesso em: 10 may. 2026.