Cheetham, Nicolas Sir 1910-.
Keepers of the keys: the Pope in history /
Nicolas Cheetham 
. - London ; Sydney : Macdonald and Co.,  1982 
. - viii, 340 p.  ill.  24 cm. 
<br/>К.: Бібліогр. : c. [313]-315. 
<br/><label>  ISBN: </label>0-356-08584-8