Sangpradit, Theerapong, and Vantipa Roadrangka. “Study of the state of teaching and learning the concept of light by eighth grade science teachers in schools under the Bangkok Metropolitan Administration (Thai)”. Asia-Pacific Journal of Science and Technology 14, no. 4 (April 19, 2017): 297–309. accessed January 6, 2026. https://so01.tci-thaijo.org/index.php/APST/article/view/83427.