Herman, H. et al. 2023. Quality Assurance in Education: The Development of An Employment Contract-Based Madrassa Principal Supervision Model At Madrassa Aliyah In West Aceh Regency. AL-ISHLAH: Jurnal Pendidikan. 15, 1 (Jan. 2023), 411–422. DOI:https://doi.org/10.35445/alishlah.v15i1.2615.