Ibrahim MM, Jamaludin KA, Rosli MS, Damanhuri MIM, Taha H, Borhan MT. Enhancing Self-Directed Learning Skills via Blended Problem-based Learning in Chemistry Learning. CAC. 2022;23(1):1818-1835. Accessed June 15, 2025. https://ca-c.org/index.php/cac/article/view/253