Muhammad Defri, and Abdul Fikri. “Mamakiah: Supporting Activity in Education Sustainability at Darul Ulum Islamic Boarding School”. JEICI - Journal of Education and Islamic Contemporary Issue 2, no. 2 (August 31, 2026): 10–16. Accessed September 2, 2026. https://jeici.kips.or.id/index.php/jeici/article/view/48.