Voigt, S. (2008). The customs union between Turkey and the EU: How did it affect Turkey? Diplom.de.
Chicago-referens (17:e uppl.)Voigt, Susanne. The Customs Union Between Turkey and the EU: How Did It Affect Turkey? Hamburg: Diplom.de, 2008.
MLA-referens (9:e uppl.)Voigt, Susanne. The Customs Union Between Turkey and the EU: How Did It Affect Turkey? Diplom.de, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.