Trakoolwang, Nualjan, Prawit Simmatun, and Sanit Teemueangsai. 2020. “Development of Learning Model Using Synthetic Technique and Self-directed Learning with Web Support to Enhance Creative Thinking and Self-Learning Ability of Elementary Students”. Journal of Education Rajabhat Maha Sarakham University 17 (3). Maha Sarakham, Thailand:117-28. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/251536.