ZAHRA, F. A.; HUSNA, A. U.; HILMA, N.; HIDAYATULLAH, R. THE ROLE OF THE PRINCIPAL AS A SUPERVISOR IN IMPROVING THE QUALITY OF LEARNING IN SMPN 9 PAYAKUMBUH. Sindoro: Cendikia Pendidikan, [S. l.], v. 7, n. 3, p. 31–40, 2024. DOI: 10.9644/sindoro.v7i3.6229. Disponível em: https://ejournal.warunayama.org/index.php/sindorocendikiapendidikan/article/view/6229. Acesso em: 8 jul. 2025.