APA-referens (7:e uppl.)

ebrary, Inc, O'Neill, M., & Winter, A. (2013). New challenges for the EU internal security strategy. Cambridge Scholars Pub..

Chicago-referens (17:e uppl.)

ebrary, Inc, Maria O'Neill, och Aaron Winter. New Challenges for the EU Internal Security Strategy. Newcastle, Neb.: Cambridge Scholars Pub., 2013.

MLA-referens (9:e uppl.)

ebrary, Inc, et al. New Challenges for the EU Internal Security Strategy. Cambridge Scholars Pub., 2013.