Kueakool, Anusit, and Pattamaporn Pimthong. “Exploring Grade 9 Students’ Representation About Characteristics of Atom”. Kasetsart Journal of Social Sciences 32, no. 3 (December 31, 2011): 470–477. accessed September 28, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/246757.