Barber, Richard W..
The Holy Grail: imagination and belief /
Richard Barber 
. - Cambridge : Harvard University Press,  2004 
. - xiv, 463 p.  ill.  24 cm. 
<br/>К.: Бібліогр. : c. 381-411, Index 
<br/><label>  ISBN: </label>0-674-01390-5