APA

Hill C., Smith M., . (2005). International relations and the European Union. Oxford: Oxford University Press.

Chicago

Hill Christopher, Smith Michael, . 2005. International relations and the European Union. Oxford: Oxford University Press.

Harvard

Hill C., Smith M., . (2005). International relations and the European Union. Oxford: Oxford University Press.

MLA

Hill Christopher, Smith Michael, . International relations and the European Union. Oxford: Oxford University Press. 2005.