Nurjanna, N., Sabang, S. M., Ijirana, I., & Ratman, R. (2026). Influence Problem-Based Learning Model (PBL) on Student Learning Outcomes on Colloidal Systems Material. Jurnal Akademika Kimia, 15(1), 46–54. https://doi.org/10.22487/j24775185.2026.v15.i1.pp46-54