APA-Zitierstil (7. Ausg.)

Youngs, R. (2009). Energy security: Europe's new foreign policy challenge (1.publ.). Routledge.

Chicago-Zitierstil (17. Ausg.)

Youngs, Richard. Energy Security: Europe's New Foreign Policy Challenge. 1.publ. New York [u.a.]: Routledge, 2009.

MLA-Zitierstil (9. Ausg.)

Youngs, Richard. Energy Security: Europe's New Foreign Policy Challenge. 1.publ. Routledge, 2009.