Bahri, Samsul, and Fauzi Bakri. “Implementation of Problem-Based Learning to Improve Physics Learning Outcomes of Class X IPA-4 in SMA 59”. Jurnal Penelitian & Pengembangan Pendidikan Fisika 4, no. 1 (June 30, 2018): 35 - 46. Accessed May 25, 2024. https://journal.unj.ac.id/unj/index.php/jpppf/article/view/7360.