Pakpahan FK, Purba NA, Sianturi CL. Pengaruh Model Problem Based Instruction terhadap Hasil Belajar Siswa Kelas V di SD Negeri 122350 Pematang Siantar . JPDK [Internet]. 2022 Oct. 23 [cited 2025 Dec. 5];4(5):7060-71. Available from: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/7852