A Case Study of Instructional Supervision in Improving Learning Quality at SMK PGRI 6 Ngawi. JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan), [S. l.], v. 10, n. 2, p. 972–991, 2025. DOI: 10.31851/jmksp.v10i2.19306. Disponível em: https://jurnal.univpgri-palembang.ac.id/index.php/JMKSP/article/view/19306. Acesso em: 21 jun. 2026.