APA-Zitierstil (7. Ausg.)

Helwig, N., & Siddi, M. (2020). Germany's leadership in the EU's foreign and security policy. Routledge, Taylor & Francis Group.

Chicago-Zitierstil (17. Ausg.)

Helwig, Niklas, und Marco Siddi. Germany's Leadership in the EU's Foreign and Security Policy. Philadelphia, PA: Routledge, Taylor & Francis Group, 2020.

MLA-Zitierstil (9. Ausg.)

Helwig, Niklas, und Marco Siddi. Germany's Leadership in the EU's Foreign and Security Policy. Routledge, Taylor & Francis Group, 2020.