Saksri Supasorn และ Penbhorn Kajornklin; Kitti Seeboonruang; Purim Jarujamrus. (2022) Learning Difficulties in High School Chemistry: The Case of Chemical Equilibrium. <i>International Journal of Science Education and Teaching (IJSET)</i>, <i>1</i>(3), 121-127.Saksri Supasorn และ Penbhorn Kajornklin; Kitti Seeboonruang; Purim Jarujamrus. "Learning Difficulties in High School Chemistry: The Case of Chemical Equilibrium". International Journal of Science Education and Teaching (IJSET) 1 (2022):121-127.Saksri Supasorn และ Penbhorn Kajornklin; Kitti Seeboonruang; Purim Jarujamrus. Learning Difficulties in High School Chemistry: The Case of Chemical Equilibrium. Science Education Association (Thailand):ม.ป.ท. 2022.