Improving Students’ Critical Thinking through Problem-Based Learning in English Class at Grade XI SMK Swasta GKPI 1 Pematangsiantar. Scripta Humanika [Internet]. 2026 Jan. 30 [cited 2026 Feb. 22];1(3):304-13. Available from: https://scriptaintelektual.com/scripta-humanika/article/view/643