Wongdaeng, Meechai, and Sulaiya Hajihama. “Perceptions of Project-Based Learning on Promoting 21st Century Skills and Learning Motivation in a Thai EFL setting”. Journal of Studies in the English Language 13, no. 2 (December 26, 2018): 158–190. accessed January 8, 2026. https://so04.tci-thaijo.org/index.php/jsel/article/view/113931.