Tambunan, Alki, Abai Tambunan, and Hiskia Pakpahan. “Optimalisasi Manajemen Perintisan Pendidikan Non Formal Lembaga Kursus Little Josua Di Desa Pagarbatu Tapanuli Utara”. Satya Sastraharing : Jurnal Manajemen 7, no. 2 (November 30, 2023): 132 - 145. Accessed March 27, 2025. https://ejournal.iahntp.ac.id/index.php/Satya-Sastraharing/article/view/1051.