Azizah, Nurul, Elly Hasan Sadeli, and Ratna Kartika Wati. 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 (November):153-60. https://doi.org/10.30595/pssh.v13i.898.