Siregar, Rahmayani, et al. “Pengaruh Model Problem Based Learning Terhadap Higher Order Thingking Skill Dan Hasil Belajar Hadits Tarbawi Mahasiswa Pendidikan Agama Islam Universitas Islam Riau”. Jurnal Pendidikan Tambusai, vol. 9, no. 2, May 2025, pp. 13475-9, https://jptam.org/index.php/jptam/article/view/27184.