Wuttisela, Karntarat, Purim Jarujamrus, Sanoe Chairam, and Saksri Supasorn. “Small-Scale and Smartphone-Based Colorimetric Experiments to Enhance Grade-11 Students’ Conceptual Understanding of Chemical Equilibrium”. Jurnal Pendidikan IPA Indonesia 13, no. 4 (November 30, 2024). Accessed December 12, 2025. https://journal.unnes.ac.id/journals/jpii/article/view/14690.