SILABAN, Ramlan; SILABAN, Saronom; PANGGABEAN, Freddy T.M.; GINTING, Elsa. PENGEMBANGAN BAHAN AJAR INOVATIF RUMUS KIMIA DAN PERSAMAAN REAKSI BERBASIS MODEL PEMBELAJARAN PROBLEM BASE LEARNING (PBL). Jurnal Pendidikan Kimia, [S. l.], v. 7, n. 1, p. 17–23, 2015. DOI: 10.24114/jpkim.v7i1.5493. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/5493. Acesso em: 4 aug. 2025.