Columbia subject headings:
Iraq--Foreign relations--Turkey.
Refugees--Turkey.
Syria--Foreign relations--Turkey.
Turkey--Foreign relations--Iraq.
Turkey--Foreign relations--Syria.
Harvard subject headings:
Iraq--Foreign relations--Turkey.
Refugees--Turkey.
Syria--Foreign relations--Turkey.
Turkey--Foreign relations--Iraq.
Turkey--Foreign relations--Syria.
Princeton subject headings:
Iraq--Foreign relations--Turkey.
Refugees--Turkey.
Syria--Foreign relations--Turkey.
Turkey--Foreign relations--Iraq.
Turkey--Foreign relations--Syria.