WAHIDAH, N. The Effect Of Using Poster In The Canva Application To Improve Students’ Writing Ability At Twelfth Grade Students Of SMAN 9 Mandau. Jolly Journal of English Education, [S. l.], v. 4, n. 1, p. 54–65, 2026. DOI: 10.63435/jjee.v4i1.293. Disponível em: https://ejournal.staihwduri.ac.id/index.php/jjee/article/view/293. Acesso em: 10 sep. 2026.