Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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