Defista, Chesa, and Nurfina Aznam. “Chemistry-Focused Conceptual Understanding Research Trends: A Systematic Review”. Jurnal Penelitian Pendidikan IPA 10, no. 4 (April 25, 2024): 180–187. Accessed May 29, 2025. https://jppipa.unram.ac.id/index.php/jppipa/article/view/6534.