CAMELIA, W. The Effect Of Using Hello English Application On Students’ Ability in Writing Active And Passive Voice At The Eleventh Grade Students Of SMAN 9 Mandau. Jolly Journal of English Education, [S. l.], v. 2, n. 2, p. 86–105, 2024. DOI: 10.63435/jjee.v2i2.97. Disponível em: https://ejournal.staihwduri.ac.id/index.php/jjee/article/view/97. Acesso em: 26 sep. 2025.