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 [Internet]. 2026 Jun. 30 [cited 2026 Sep. 10];4(1):54-65. Available from: https://ejournal.staihwduri.ac.id/index.php/jjee/article/view/293