Janthamad, Amarin, and Arun Suikraduang. “Development of project-based learning activities in social studies for grade 4 primary school students”. Journal for Developing the Social and Community 13, no. 1 (February 27, 2026): 479–492. accessed September 2, 2026. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/297349.