Sofiyah, Siti. “Application Of Problem Based Learning Models To Improve Biologi Learning Outcomes Of VIII Class MTs Negeri 1 Tuban”. Inovasi: Jurnal Diklat Keagamaan 14, no. 2 (October 26, 2020): 156–168. Accessed April 4, 2025. https://bdksurabaya.e-journal.id/bdksurabaya/article/view/162.