Ahmed, Ahmed Rahda, and HamaSalh Hassan Khdir. “The Economic Impact of the Zangi State (521H 1127AD – 569H 1174AD) on Ayyubid State (570H 1175AD – 647H 1250AD)”. Journal of University of Raparin, vol. 9, no. 4, Sept. 2022, pp. 649-72, doi:10.26750/Vol(9).No(4).Paper28.