Wardita, I Made. “Optimalisasi Pengelolaan Peserta Didik Dengan Menerapkan Program Seberfoniberlin”. Indonesian Journal of Educational Development (IJED) 2, no. 2 (August 29, 2021): 240-247. Accessed May 4, 2024. https://ojs.mahadewa.ac.id/index.php/ijed/article/view/1208.