Dewi Purwakanti. IMPLEMENTASI MODEL PROBLEM BASED LEARNING (PBL)UNTUK MENINGKATKAN HASIL BELAJAR PADA MATERI VIRUS KELAS X DI SMA NEGERI 1 TANJUNG. JBK [Internet]. 2022 Mar. 4 [cited 2024 May 14];4(1):7-11. Available from: https://e-journal.unmas.ac.id/index.php/JBK/article/view/8079