The Effect of Learning Application Duolingo to the Fifth Grade Students’ Vocabulary at MI Mambaul Ulum. ELTT, [S. l.], v. 10, n. 1, p. 189–193, 2024. Disponível em: https://proceeding.unpkediri.ac.id/index.php/eltt/article/view/6842. Acesso em: 27 aug. 2026.