APA

Lippert Barbara, Royal Institute of International Affairs & Institut für Europäische Politik. (2001). British and German interests in EU enlargement. London: Continuum.

Chicago

Lippert Barbara, Royal Institute of International Affairs and Institut für Europäische Politik. 2001. British and German interests in EU enlargement. London: Continuum.

Harvard

Lippert Barbara, Royal Institute of International Affairs and Institut für Europäische Politik. (2001). British and German interests in EU enlargement. London: Continuum.

MLA

Lippert Barbara, Royal Institute of International Affairs and Institut für Europäische Politik. British and German interests in EU enlargement. London: Continuum. 2001.