APA
Kellermann Alfred E, Zwaan Jap W Dc, . (2001). EU enlargement : The constitutional impact at EU and national level. The Hague: T M C Asser Pres.
Chicago
Kellermann Alfred E, Zwaan Jap W Dc, . 2001. EU enlargement : The constitutional impact at EU and national level. The Hague: T M C Asser Pres.
Harvard
Kellermann Alfred E, Zwaan Jap W Dc, . (2001). EU enlargement : The constitutional impact at EU and national level. The Hague: T M C Asser Pres.
MLA
Kellermann Alfred E, Zwaan Jap W Dc, . EU enlargement : The constitutional impact at EU and national level. The Hague: T M C Asser Pres. 2001.