LESTARI, Siti. Upaya Meningkatkan Aktivitas dan Hasil Belajar Biologi dengan Model Problem Based Learning pada Materi Bakteri. Jurnal Pendidikan Matematika dan Sains, [S. l.], v. 9, n. 2, p. 136–148, 2021. DOI: 10.21831/jpms.v9i2.42921. Disponível em: https://journal.uny.ac.id/index.php/jpms/article/view/42921. Acesso em: 1 jul. 2025.