DAELI, Hillel El Sophos; BAENE, Eduar; EA, Jeliswan Berkat Iman Jaya G; ZEBUA, Emanuel. Analisis Standar Operasional Prosedur (Sop) Dalam Meningkatkan Efektivitas Pelayanan Sekolah Pada Sd Negeri 071183 Faondrato Kecamatan Sirombu Kabupaten Nias Barat. Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 6, p. 8603–8611, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/6443. Acesso em: 7 jul. 2026.