Songsukrujiroad, Sappasiri. “The Analysis and Evaluation of Chinese Textbooks of Ubon Ratchathani Rajabhat University (Chinese Program)”. International Journal of Integrated Education and Development 2, no. 2 (April 12, 2018): 11–16. Accessed May 3, 2024. https://so02.tci-thaijo.org/index.php/ijied/article/view/131923.