Siregar MW, Muhammad Rifa’i. Peran Kepala Sekolah Dalam Implementasi Manajemen Mutu 5s (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) Di MAS Muhammadiyah 1 Medan. PESHUM [Internet]. 2026 Jun. 24 [cited 2026 Aug. 7];5(4):11323-30. Available from: https://al-haramjournal.co.id/PESHUM/article/view/17842