الأحمد محمد علي. 2008. “Ahmad, Muhammad Ali. “Towards a Methodological Perspective in the Study of History: Ibn Khaldūn As a Model," Year 13, Issue 51 (Winter 1429 AH 2008 CE), Pp. 9-38”. Al-Fikr Al-islāmī Al-muʿāṣir (previously Islamiyat Al-Ma’rifah) 13 (51):9-38. https://doi.org/10.35632/citj.v13i51.1205.