Columbia subject headings:
Harvard subject headings:
Erdoğan, Recep Tayyip
Sovereignty.
Turkey--Foreign public opinion, German.
Turkey--History--21st century.
Turkey--Politics and government--21st century.
Princeton subject headings:
Erdoğan, Recep Tayyip.
Sovereignty.
Turkey--Foreign public opinion, German.
Turkey--History--21st century.
Turkey--Politics and government--21st century.