Aman, Aman. “IMPROVEMENT OF STUDENT’S CRITICAL THINKING ABILITY THROUGH PROBLEM-SOLVING ON THE EVALUATION OF EDUCATION POLICY”. ISTORIA : Jurnal Pendidikan dan Ilmu Sejarah 15, no. 2 (September 1, 2019). Accessed May 12, 2025. https://journal.uny.ac.id/index.php/istoria/article/view/28007.