“The Effectiveness of Problem-Based Learning-Based E-SWS on Sound Wave Material to Improve Students’ Critical Thinking Skills”. Jurnal Penelitian Pembelajaran Fisika 11, no. 2 (October 31, 2025): 248–257. Accessed March 16, 2026. https://jppf.ppj.unp.ac.id/index.php/jppf/article/view/29.