Subekti, Yunti Fahrulia, and Andriyani Andriyani. “Development of PBL-Based E-Worksheet for 8th Grade Students’ Critical Thinking Skills”. International Journal on Emerging Mathematics Education 7, no. 2 (September 30, 2023): 89–98. Accessed November 4, 2024. https://journal.uad.ac.id/index.php/IJEME/article/view/29583.