“Defensive Fortifications and Army Organization in the First Abbasid Era (132-247 AH 749-861 AD) Baghdad As a Model”. Journal of the College of Basic Education 1, no. عدد خاص (July 25, 2024): 842–861. Accessed May 14, 2025. https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/11762.