مرعي س. . and فحصة ك. . . (2021) “Titles of the Abbasid caliphs in the first round (132-232 AH / 750-847 CE)”, Tishreen University Journal- Arts and Humanities Sciences Series, 43(1). Available at: https://journal.tishreen.edu.sy/index.php/humlitr/article/view/10383 (Accessed: 22July2024).