Mahamit, Pornpittaya, and Chuanpit Sriwichai. 2023. “Investigation of Self-Directed Learning Performance of Undergraduate Students in English Writing Course”. Journal of MCU Humanities Review 9 (1). ิิิBankok, Thailand:279-94. https://so03.tci-thaijo.org/index.php/human/article/view/263309.