Hakim, Z. R. and Riyani, E. (2015) “PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING PADA MATA PELAJARAN IPS”, AT-TA`DIB, 1(2), pp. 143–161. Available at: https://ejournal.uika-bogor.ac.id/index.php/at-tadib/article/view/139 (Accessed: 24 November 2024).