Meliana R Hutajulu, H. and Setiawan, D. (2025) “Pengaruh Model Problem Based Learning terhadap Hasil Belajar PPKn di SMP Methodist 9 Medan ”, Jurnal Pendidikan Kewarganegaraan, 9(1), pp. 61–72. doi: 10.31571/jpkn.v9i1.8178.