Manajemen Kepala Sekolah terhadap Ekstrakurikuler Sains Matematika SD NU Sleman Yogyakarta. Jurnal Prima Manajemen, [S. l.], v. 1, n. 6, p. 1187–1200, 2026. Disponível em: https://journal.al-afif.org/index.php/jpm/article/view/1630. Acesso em: 15 sep. 2026.