Tierney, Brian. <br/><br/>
Sources of medieval history / 
Brian Tierney. 
 - 3d ed. 
 - New York :  Knopf,   c1978. 
 - xiv, 378 p.  
 - His The Middle Ages ; v. 1 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0394321510  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Middle Ages
<br/><br/><label>Dewey Class. No.: </label>909  / TIE