Akfan, Sofyan Sukwara. “Utilizing Four Square Method (FSM) to Enhance Students’ Speaking Ability”. ELS Journal on Interdisciplinary Studies in Humanities 1, no. 1 (May 26, 2018): 44-51. Accessed April 28, 2024. http://journal.unhas.ac.id/index.php/jish/article/view/4083.