Falih , Karim. “Economic Aspects in the Book of Al-Bilad (the Countries) by Al-Yaqubi (d. 292 A.H.)”. Islamic Sciences Journal 13, no. 7 (March 17, 2023): 67–88. Accessed December 4, 2024. https://jis.tu.edu.iq/index.php/jis/article/view/363.