ZUHDI, Mahmud. Improving Civics Education Learning Outcomes in 1908 National Awakening Spirit Materials by Using Problem Solving Learning Methods. Bulletin of Pedagogical Research, [S. l.], v. 2, n. 1, p. 9-`19, 2022. DOI: 10.51278/bpr.v2i1.237. Disponível em: https://attractivejournal.com/index.php/bpr/article/view/237. Acesso em: 6 may. 2026.