Gusnar Dwi Indra Saputra Ibrahim. “PENINGKATAN HASIL BELAJAR AL-QUR’AN DAN HADIS DENGAN PENDEKATAN PROBLEM BASED LEARNING”. Al-Minhaj : Jurnal Pendidikan Islam, vol. 3, no. 4, Aug. 2021, pp. 365-72, https://www.journal.iaingorontalo.ac.id/index.php/alminhaj/article/view/5552.