SURUR , Yuyuk Naimatus; PUSPITASARI, Happy Hyma. Peningkatan Hasil Belajar Mata Pelajaran Pendidikan Kewarganegaraan melalui Metode Problem Solving . Journal of Education Research, [S. l.], v. 3, n. 3, p. 138–143, 2022. DOI: 10.37985/jer.v3i3.92. Disponível em: https://mail.jer.or.id/index.php/jer/article/view/92. Acesso em: 2 sep. 2025.