Tawichai , Suphachai. “The Development of the Textbooks on Meanings in Thai”. Journal of Humanities and Social Sciences Suratthani Rajabhat University 10, no. 2 (November 16, 2018): 145–183. Accessed May 4, 2024. https://so03.tci-thaijo.org/index.php/jhsc/article/view/155664.