Columbia subject headings:
Referendum--Western Sahara.
United Nations--Western Sahara.
Western Sahara--Politics and government.
Harvard subject headings:
Referendum--Western Sahara.
United Nations--Western Sahara.
United States--Foreign relations--Western Sahara.
Western Sahara--Foreign relations--United States.
Western Sahara--Politics and government.
Princeton subject headings:
Referendum--Western Sahara.
United Nations--Western Sahara.
Western Sahara--Politics and government.