The Cambridge history of Iran.  Vol. 5,  The Saljuq and Mongol periods / 
edited by J. A. Boyle. 
 - Cambridge  :  At the University Press,  1968. 
 - xiii, 762p. 
<br/><br/><label>ISBN: </label>052106936X 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Iran--History.