Ardiansyah, M. F., F. Ramadhan, M. R. Naja, and A. N. Maulana. “The Legacy of Islamic Civilization During the Reign of Caliph Harun Al-Rashid”. Proceedings of International Conference on Islamic Civilization and Humanities, Vol. 3, June 2025, pp. 1202-16, https://proceedings.uinsa.ac.id/index.php/iconfahum/article/view/3279.