Suryadi, S., M. I. I. Hamdani, and A. D. . Fuad. “The Effectiveness of Problem-Based Learning in Improving Students’ Critical Thinking Skills”. Jurnal Kiprah Pendidikan, vol. 4, no. 3, July 2025, pp. 411-8, doi:10.33578/kpd.v4i3.p411-418.