Martina Labora Nainggolan, Putra Rajagukguk, Marthalena Lumbangaol, Eniwati Nduru, Rainaldi Setiawan, and Hisardo Sitorus. “Personal Branding Guru Agama Kristen”. Jurnal Riset Rumpun Ilmu Bahasa 5, no. 1 (January 5, 2026): 13–23. Accessed February 28, 2026. https://prin.or.id/index.php/JURRIBAH/article/view/7841.