Hikmah, Andi, Konder Manurung, and Anjar Kusuma Dewi. “Developing Speaking Skill of Grade XI Students of SMA Negeri 1 Ampibabo through Problem Solving Method”. ELS Journal on Interdisciplinary Studies in Humanities 4, no. 4 (December 8, 2021): 413-423. Accessed May 2, 2024. https://journal.unhas.ac.id/index.php/jish/article/view/18480.