Komala, Ratna, Erna Heryanti, and Amelia Rinawati. “Effect of Problem-Based Learning Model on Biodiversity Problem-Solving Skills”. Biosfer: Jurnal Pendidikan Biologi 14, no. 1 (May 22, 2021): 120–131. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/16325.