prasertpong, Suttida, and Tatchavat Laosuwan. “The development of activities using Problem-Based Learning (PBL) in the production of goods services and consumer protection of Mathayomsuksa 2 Students”. Journal for Developing the Social and Community 10, no. 3 (December 30, 2023): 407–424. accessed September 2, 2026. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/272008.