IMPLEMENTASI MODEL PROBLEM BASED LEARNING BERBANTUAN VIDEO UNTUK MENINGKATKAN HASIL BELAJAR KOGNITIF PESERTA DIDIK KELAS XI 2 DI SMA KESATRIAN 2 SEMARANG. psnppg. 2023;1(2):3737-3743. Accessed August 13, 2026. https://conference.upgris.ac.id/index.php/psnppg/article/view/5704