“Perhitungan Biaya Satuan Unit Unit Cost SPP Bulanan Di MI Darul Ulum Brengkok Brondong Paciran Lamongan”. Mudir: Jurnal Manajemen Pendidikan 1, no. 2 (July 1, 2019): 99–111. Accessed October 28, 2026. https://ejournal.unsuda.ac.id/index.php/MPI/article/view/10.