ILAINA, Ilaina; SUDRAJAT, Sudrajat. Improving students’ critical thinking skills through Problem Solving Methods. JIPSINDO, [S. l.], v. 13, n. 1, 2026. Disponível em: https://jurnal.uny.ac.id/index.php/jipsindo/article/view/92616. Acesso em: 21 may. 2026.