APA (7th ed.) Citation

Smith & Hill. (2005). International relations and the European Union (4th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Smith and Hill. International Relations and the European Union. 4th ed. Oxford New York: Oxford University Press, 2005.

MLA (8th ed.) Citation

Smith and Hill. International Relations and the European Union. 4th ed. Oxford University Press, 2005.