Uthaijom, Siriyada, and Dhanita Duangwilai. “The Development of System Thinking and Teamwork and Collaboration Competency of Grade 8 Students Using Project-Based Learning with Graphic Diagram”. Dhammathas Academic Journal 25, no. 1 (March 23, 2025): 63–74. accessed April 3, 2025. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/278470.