Pengaruh Model Problem Based Learning terhadap Keterampilan Proses dan Hasil Belajar IPS Siswa SD. Indonesian Journal of Primary Education, [S. l.], v. 3, n. 2, p. 58–63, 2019. Disponível em: https://ejournal-tasikmalaya.upi.edu/ijpe/article/view/278. Acesso em: 29 sep. 2026.