SISCHA YOLANDA; MARHAM SITORUS. PENGEMBANGAN BAHAN AJAR KIMIA BERBASIS PROBLEM BASED LEARNING (PBL) PADA POKOK BAHASAN ASAM BASA DI SMA NEGERI 1 PERCUT SEI TUAN. Jurnal Pendidikan Sosial dan Humaniora, [S. l.], v. 2, n. 3, p. 12109–12117, 2023. Disponível em: https://publisherqu.com/index.php/pediaqu/article/view/319. Acesso em: 26 oct. 2026.