Селџучко царство — разлика између измена

* {{Cite book| ref=harv|last=Black|first=Edwin|title=Banking on Baghdad: inside Iraq's 7,000-year history of war, profit and conflict|publisher=John Wiley and sons|year=2004|pages=38}}

* {{Cite book| ref=harv|last=Savory|first=R. M.|title=Introduction to Islamic civilisation|publisher=Cambridge University Press|year=1976|pages=82}}