Columbia subject headings:
Princes--Turkey--History--Sources.
Sultans--Turkey--History--Sources.
Turkey--History--Ottoman Empire, 1288-1918--Sources.
Turkey--Kings and rulers--History--Sources.
Harvard subject headings:
Princes--Turkey--History--Sources.
Sultans--Turkey--History--Sources.
Turkey--History--Ottoman Empire, 1288-1918--Sources.
Turkey--Kings and rulers--20th century--Sources.
Princeton subject headings:
Princes--Turkey--History--Sources.
Sultans--Turkey--History--Sources.
Turkey--History--Ottoman Empire, 1288-1918--Sources.
Turkey--Kings and rulers--20th century--Sources.