Kajornklin, Penbhorn, Kitti Seeboonruang, Purim Jarujamrus, and Saksri Supasorn. “Learning Difficulties in High School Chemistry: The Case of Chemical Equilibrium”. International Journal of Science Education and Teaching 1, no. 3 (December 31, 2022): 121–127. accessed August 11, 2025. https://so07.tci-thaijo.org/index.php/IJSET/article/view/2155.