(1957). International and interregional economics. McGraw-Hill.
Chicago Style (17th ed.) ZitazioaInternational and Interregional Economics. New York: McGraw-Hill, 1957.
MLA (9th ed.) ZitazioaInternational and Interregional Economics. McGraw-Hill, 1957.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.