APA aipamena

Lelieveldt, H., & Princen, S. (2011). The politics of the European union. Cambridge university press.

Chicago Style aipamena

Lelieveldt, Herman, and Sebastiaan Princen. The Politics of the European Union. Cambridge: Cambridge university press, 2011.

MLA aipamena

Lelieveldt, Herman, and Sebastiaan Princen. The Politics of the European Union. Cambridge university press, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.