Sofa, Mahira Maya, and Ajat Sudrajat. “The Effect of the Project-Based Learning Model on Students’ Learning Outcomes and Learning Activities”. Hydrogen: Jurnal Kependidikan Kimia 14, no. 4 (August 31, 2026). Accessed September 8, 2026. https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/21074.