Rohani, Siti, Junita Junita, and Agus Anjar. 2024. “The Role of the Principal As a Supervisor in Increasing the Effectiveness of Administrative Services at SMP Negeri 1 Bilah Hulu”. Jurnal Riset Ilmu Pendidikan 4 (4):201-9. https://doi.org/10.56495/jrip.v4i4.818.