Riley-Smith, Jonathan 1938-.
The First Crusade and the idea of crusading /
Jonathan Riley-Smith 
. - Philadelphia : University of Pennsylvania Press,  1986 
. - vii, 227 p.  map.  22 cm. 
 - (The Middle Ages )
<br/>К.: Бібліогр. : c. 204-213, Index 
<br/><label>  ISBN: </label>0-8122-8026-1