Sahidin U, Ratnasari J. Enhancing Cognitive Learning Outcomes in MA Al Manar Class XII MIA Students using a Problem-Based Learning Method on Biotechnology Materials. JRBE [Internet]. 2022Jun.30 [cited 2024Apr.26];3(1):45-58. Available from: https://jurnal.ummi.ac.id/index.php/rebion/article/view/1677