Liu, I Wei, and Pornpimol Sukavatee. “The Effects of Debate Instruction Through a Flipped Learning Environment on Critical Thinking Skills of Thai High School Students”. Scholar: Human Sciences 11, no. 1 (June 27, 2019): 238. Accessed April 29, 2024. http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/3375.