Yontragangamjon, K., & Limtasiri, O. (2023). A Comparison of the Social Studies Learning Achievement of Matthayomsuksa 1 at Thammasartklonglungwittayakom School using Problem-based Learning Approaches and Traditional Methods. Academic MCU Buriram Journal, 8(1), 204–215. retrieved from https://so06.tci-thaijo.org/index.php/ambj/article/view/259909