Voigt, S. (2008). The customs union between Turkey and the EU: How did it affect Turkey? Diplom.de.
Lua i Stíl Chicago (17ú heag.)Voigt, Susanne. The Customs Union Between Turkey and the EU: How Did It Affect Turkey? Hamburg: Diplom.de, 2008.
Lua MLA (9ú heag.)Voigt, Susanne. The Customs Union Between Turkey and the EU: How Did It Affect Turkey? Diplom.de, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.