@book{22627,
	author = {Imamuddin, S. M.},
	title = {A Political History of the Muslims, Vol.-2 (Umayyads and Abbasids, 661-1258), Part-1 (Mu`awiyhal-M u`tasim bi'llah 661-842) : },
	publisher = {Najmahsons,},
	year = {1973. },
	address = {Dacca:}
}