MELDRAWATI, Meldrawati; AMRI, Erismar; ROSBA, Evrialiani. Validitas E-Modul Berbasis Problem Based Learning pada Materi Perubahan Lingkungan Kelas X SMA/MA. Bioscientist : Jurnal Ilmiah Biologi, [S. l.], v. 11, n. 1, p. 263–269, 2023. DOI: 10.33394/bioscientist.v11i1.7326. Disponível em: https://e-journal.undikma.ac.id/index.php/bioscientist/article/view/7326. Acesso em: 16 oct. 2025.