Azizah, N., Sadeli, E. H., & Wati, R. K. (2023). The Effectiveness of Problem-Based Learning Model in Developing Critical Thinking Skills on the “Youth Pledge” Topic Within the Framework of “Bhinneka Tunggal Ika”. Proceedings Series on Social Sciences & Humanities, 13, 153–160. https://doi.org/10.30595/pssh.v13i.898