Salsabilla, Fitri Wahyuni, Elvira Destiansari, and Meilinda. “Development of Electronic students’ Worksheets Based on Problem-Based Learning on Air Pollution Material”. Biosfer: Jurnal Pendidikan Biologi 17, no. 2 (October 31, 2024): 337–349. Accessed May 20, 2026. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/34117.