Sergius, et al. “ANALISIS MODEL PENGEMBANGAN MANAJEMEN STRATEGIK STP DIAN MANDALA GUNUNGSITOLI”. Serunai : Jurnal Ilmiah Ilmu Pendidikan, vol. 9, no. 2, Dec. 2023, https://www.ejournal.stkipbudidaya.ac.id/index.php/serunai/article/view/1123.