Mooltha, S. . and Bhiasiri , S. . (2022) “The research study the result of the visual art learning in creative Tung Isan Flag by project-based learning for Grade 9 students”, Journal of Research and Development Institute Rajabhat Maha Sarakham University, 9(2), pp. 123–136. Available at: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/254523 (Accessed: 19 May 2024).