Damayanti, Vivi, and Dian Novita. “Development Problem-BasedLearning Oriented E-Worksheet To Train Analytical Skills On Chemical Equilibrium Material”. Hydrogen: Jurnal Kependidikan Kimia 12, no. 3 (July 18, 2024): 544–561. Accessed August 17, 2025. https://e-journal3.undikma.ac.id/index.php/hydrogen/article/view/12189.