Columbia subject headings:
Naples (Kingdom)--History--1016-1268.
Normandy (France)--History--To 1515.
Normans--Italy--Naples (Kingdom)--History.
Normans--Italy--Sicily--History.
Sicily (Italy)--History--1016-1194.
Harvard subject headings:
Italy, Southern--History--535-1268.
Naples (Kingdom)--History--1016-1268.
Normans--Italy, Southern--History--To 1500.
Princeton subject headings:
Italy, Southern--History--535-1268.
Naples (Kingdom)--History--1016-1268.
Normans--Italy, Southern--History--To 1500.