Rofi, Abdul, and Zaenal Abidin. “Problem-Solving Skills and Self-Efficacy in Biology Education: A Systematic Review”. Biosfer: Jurnal Pendidikan Biologi 19, no. 1 (February 25, 2026): 382–395. Accessed May 20, 2026. https://journal.unj.ac.id/unj/index.php/biosfer/article/view/64491.