KHUSNA, Nur; SA’ADAH, Ayatus; ROHMADI, Mukhlis. Validation of Problem-Based Learning Videos on Environmental Pollution Material for Class VII SMP NU Palangkaraya. Bioilmi: Jurnal Pendidikan, [S. l.], v. 10, n. 1, p. 11–20, 2024. DOI: 10.19109/bioilmi.v10i1.22775. Disponível em: https://jurnal.radenfatah.ac.id/index.php/bioilmi/article/view/22775.. Acesso em: 18 apr. 2025.