The lives of the eighth-century popes (liber pontificalis) : the ancient biographies of nine popes from AD 715 to AD 817 /
translated with an introduction and commentary by R. Davis 
. - Liverpool  : Liverpool University Press,  1992 
. - XX, 264 p.  21 cm. 
 - ((Translated texts for Historians ; Vol. 13) )
<br/>К.: Карти, бібліогр. 
<br/><label>  ISBN: </label>0-85323-018-8