Wita Ferwati, Abdul Hasan Saragih, Harun Sitompul. Understanding and Interpreting the Problem-Based Learning Model Based on Blended Learning in High School Learning. IJSE [Internet]. 2026 Aug. 11 [cited 2026 Oct. 22];41(17s):911-9. Available from: https://mail.internationalsped.com/index.php/ijse/article/view/5335