Hestiningtyas, Widya, Yoh Rizal, and Fanni Rahmawati. “Problem Based Learning Model Analysis in Improving Student’s Critical Thinking Ability”. Economic Education Analysis Journal 10, no. 3 (October 30, 2021): 543-553. Accessed December 5, 2025. https://journal.unnes.ac.id/sju/eeaj/article/view/50682.