Sombat, Thanapong, Wareesiri Singhasiri, and Atipat Boonmoh. “Implementation of Self-Directed Learning into English Courses at Mae Fah Luang University”. Connexion: Journal of Humanities and Social Sciences 3, no. 1 (June 30, 2014): 1–41. Accessed April 20, 2024. https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/241391.