Ibnu Rusydi. “Analysis of the History of Governmental Changes from Amir To the Caliph During Abdurrahman III in Andalusia (929 AD)”. al-Afkar, Journal For Islamic Studies 6, no. 3 (June 27, 2023): 729–740. Accessed February 5, 2025. https://mail.al-afkar.com/index.php/Afkar_Journal/article/view/764.