“PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP PENINGKATAN HASIL BELAJAR SISWA KELAS V DI MI HIDAYATUL MUBTADI’IN KERTOSARI PURWOSARI PASURUAN”. Jurnal Mu’allim, vol. 2, no. 2, Sept. 2020, pp. 260-72, https://jurnal.yudharta.ac.id/v2/index.php/muallim/article/view/2266.