TY  - BOOK
AU  - Pennington,Kenneth
TI  - Pope and bishops: the papal monarchy in the twelfth and thirteenth centuries 
T2  - The Middle Ages series
SN  - 0812279182
PY  - 1984///
CY  - [Philadelphia]
PB  - University of Pennsylvania Press
N1  - Bibliografia (p. 196-214) e indici
ER  -