The Cambridge history of China.  Vol. 6,  Alien regimes and border states, 907-1368 / 
edited by Herbert Franke and Denis Twitchett. 
 - Cambridge :  Cambridge University Press,  1994. 
 - xxix, 864p. 
<br/><br/><label>ISBN: </label>0521214475 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>China--History.