The lives of the ninth-century popes (liber pontificalis) : the ancient biographies of ten popes from A.D. 817-879 /
translated with an introduction and commentary by R. Davis 
. - Liverpool  : Liverpool University Press,  1995 
. - XVI, 336 p.  21 cm. 
 - ((Translated texts for Historians ; Vol. 20) )
<br/>К.: Карти, бібліогр. 
<br/><label>  ISBN: </label>0-85323-479-5