Columbia subject headings:
Diplomacy--History--15th century--Sources.
Italy--Foreign relations--1268-1492--Sources.
Italy--Foreign relations--1492-1559--Sources.
Renaissance--Italy--Sources.
Harvard subject headings:
Diplomacy--History--15th century--Sources.
Italy--Foreign relations--1268-1492--Sources.
Italy--Foreign relations--1492-1559--Sources.
Renaissance--Italy--Sources.
Princeton subject headings:
Diplomacy--History--15th century--Sources.
Italy--Foreign relations--1268-1492--Sources.
Italy--Foreign relations--1492-1559--Sources.
Renaissance--Italy--Sources.