DAKE, P.; LODO, R. Y.; MANEK, A. O. Improving English Vocabulary Mastery Through Duolingo Application For Grade 5 At SD Inpres Kayu Putih. Jurnal Penelitian Ilmu Pendidikan Indonesia, [S. l.], v. 5, n. 1, p. 840–845, 2026. DOI: 10.31004/jpion.v5i1.900. Disponível em: https://jpion.org/index.php/jpi/article/view/900. Acesso em: 18 jun. 2026.