Columbia subject headings:
Presidents--Legal status, laws, etc.--Azerbaijan.
Presidents--Legal status, laws, etc.--Russia (Federation)
Harvard subject headings:
Presidents--Legal status, laws, etc.--Azerbaijan.
Presidents--Legal status, laws, etc.--Russia (Federation)
Princeton subject headings:
Presidents--Legal status, laws, etc.--Azerbaijan.
Presidents--Legal status, laws, etc.--Russia (Federation).