APA引文

Keohane, D. The absent friend: EU foreign policy and counter-terrorism.

Trích dẫn kiểu Chicago

Keohane, Daniel. The Absent Friend: EU Foreign Policy and Counter-terrorism.

MLA引文

Keohane, Daniel. The Absent Friend: EU Foreign Policy and Counter-terrorism.

警告：这些引文格式不一定是100％准确.