APA

Vasileios Vlachos A. B., .European Union. : Springer.

Chicago

Vasileios Vlachos Aristidis Bitzenis, .European Union. : Springer.

Harvard

Vasileios Vlachos A. B., .European Union. : Springer.

MLA

Vasileios Vlachos Aristidis Bitzenis, .: Springer. .