Abdulah A, Hadiyanto, Solfema, Nurhizrah Gistituati, Atmazaki, Syafruddin. Development of Problem-Based Learning Models to Improve Critical Thinking Skills in Citizenship Education Courses. IJHESS [Internet]. 2023 Feb. 7 [cited 2026 Sep. 8];2(4). Available from: https://ijhess.com/index.php/ijhess/article/view/337