HAKIM, Z. R.; RIYANI, E. PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING PADA MATA PELAJARAN IPS. ATTA`DIB, [S. l.], v. 1, n. 2, p. 143–161, 2015. Disponível em: http://150.107.142.43/index.php/at-tadib/article/view/139. Acesso em: 12 feb. 2026.