Portela, C. (2011). European Union sanctions and foreign policy: When and why do they work? (1. issued in paperback.). Routledge.
Chicago-Zitierstil (17. Ausg.)Portela, Clara. European Union Sanctions and Foreign Policy: When and Why Do They Work? 1. issued in paperback. London [u.a.]: Routledge, 2011.
MLA-Zitierstil (9. Ausg.)Portela, Clara. European Union Sanctions and Foreign Policy: When and Why Do They Work? 1. issued in paperback. Routledge, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.