MUHAMMAD DEFRI; FIKRI, A. Mamakiah: Supporting Activity in Education Sustainability at Darul Ulum Islamic Boarding School. JEICI - Journal of Education and Islamic Contemporary Issue, [S. l.], v. 2, n. 2, p. 10–16, 2026. DOI: 10.65980/jeici.v2i2.48. Disponível em: https://jeici.kips.or.id/index.php/jeici/article/view/48. Acesso em: 2 sep. 2026.