TAMPUBOLON, S.; MANALU, A. M.; SIMARMATA, R. O. The Effect Of Duolingo Application Toward Students Listening Achievement Of Seventh Grade Students At SMP Negeri 1 Pasaributobing. Jurnal Kajian Ilmu Pendidikan (JKIP), [S. l.], v. 4, n. 2, p. 582-588, 2024. DOI: 10.55583/jkip.v4i2.876. Disponível em: http://www.journal.al-matani.com/index.php/jkip/article/view/876. Acesso em: 18 jul. 2025.