SIAHAAN, Risma; SITORUS, Marham; SILABAN, Saronom. The development of teaching materials oriented to critical thinking skills for chemistry class XI high school. Jurnal Pendidikan Kimia, [S. l.], v. 13, n. 1, p. 60–68, 2021. DOI: 10.24114/jpkim.v13i1.24145. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/24145. Acesso em: 1 jul. 2025.