Bibliografia Normanno-Sveva

Steinberg L.H.
A Portrait of Costance of Sicily
storia
Sicilia, Costanza d'Altavilla, Enrico VI
"Journal of the Warburg Institute", 1 (1937), pp. 249 ss.
steinberg l.h. *a portrait of costance of sicily* arte sicilia, costanza d'altavilla, enrico vi "journal of the warburg institute", 1 (1937), pp. 249 ss.