Sakchaisomboon, Sumonta. “An Analysis of the Introduction to Thai Language Textbooks for Foreigners”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences 39, no. 3 (August 28, 2019): 121–137. Accessed April 17, 2024. https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/167988.