Hutahean, David Togi, Ropinus Sidabutar, Cristian Neni Purba, Lukas Butar- Butar, Nandito Tampubolon, Indah Dame Nababan, Vivi Rinanda, and Marestina Saragih. “PENINGKATAN KOMPETENSI GURU MELALUI DIKLAT PENULISAN BUKU AJAR”. Community Development Journal : Jurnal Pengabdian Masyarakat 5, no. 4 (August 21, 2024): 7977–7982. Accessed November 1, 2024. http://journal.universitaspahlawan.ac.id/index.php/cdj/article/view/33483.