@book{1430,
	author = {Abd al - aziz duri},
	title = {Early islamic institutions},
	publisher = {I.B. Tauris},
	year = {2011},
	address = {New York},
	url = {https://libgen.is/book/index.php?md5=9D16D7211C7385E0AA98788DA8DC532D}
}