Yusup Ari Purnawi. IMPLEMENTASI MODEL PROBLEM BASED LEARNING (PBL)UNTUK MENINGKATKAN HASIL BELAJAR PADA MATERI VIRUS KELAS X DI SMA NEGERI 1 TANJUNG. JBK [Internet]. 2022 Mar. 5 [cited 2024 Nov. 22];4(1):12-6. Available from: https://e-journal.unmas.ac.id/index.php/JBK/article/view/8080