Octaviani, Happy Annisa’, et al. “Mproving Students’ Speaking Skill by Using Contextual Teaching and Learning”. Prosiding Seminar Nasional Pendidikan Profesi Guru, vol. 1, no. 2, Nov. 2023, pp. 526-34, https://conference.upgris.ac.id/index.php/psnppg/article/view/5148.