Tyerman, Christopher.
Fighting for Christendom: holy war and the crusades /
Christopher Tyerman 
. - Oxford : Oxford University Press,  2004 
. - 247 p.  ill., map.  21 cm. 
<br/>К.: Бібліогр. : с. 234-235, Покажчик 
<br/><label>  ISBN: </label>0-19-280325-5