Boyle, Leonard E..
A survey of the Vatican archives and of its medieval holdings /
Leonard E. Boyle 
. - Revised edition 
. - Toronto : Pontifical Institute of Mediaeval Studies,  2001 
. - viii, 251 p.  23 cm. 
 - Subsidia mediaevalia  1 .
<br/>К.: Бібліогр. : c. 173-221, Index 
<br/><label>  ISBN: </label>0-88844-417-6