Banks, A. S. [. ;. . G. (1977). Political handbook of the world ; 1977: Governments, regional issues and intergovernmental organizations as of January 1, 1977. McGraw-Hill.
Chicago Style (17th ed.) ZitazioaBanks, Arthur S. [editor] ; Green. Political Handbook of the World ; 1977: Governments, Regional Issues and Intergovernmental Organizations as of January 1, 1977. New York: McGraw-Hill, 1977.
MLA (9th ed.) ZitazioaBanks, Arthur S. [editor] ; Green. Political Handbook of the World ; 1977: Governments, Regional Issues and Intergovernmental Organizations as of January 1, 1977. McGraw-Hill, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.