NABABAN, Andrianus; SARI, Agnes Novianti Permata; MANALU, Goklas J.; LUMBAN GAOL, Nasib Tua; HUTAGALUNG, Tasya Ivana; WARUWU, Ariyanti. The Development of an Instructional Material Book for Increasing the Effectiveness of the Learning Process in the Department of Religious Extension Education. Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran, [S. l.], v. 9, n. 3, p. 924–935, 2023. DOI: 10.33394/jk.v9i3.8789. Disponível em: https://e-journal3.undikma.ac.id/index.php/jurnalkependidikan/article/view/8789. Acesso em: 18 aug. 2025.