Collins, A. (2013). Contemporary security studies (3rd ed.). Oxford University Press.
Cita Chicago (17th ed.)Collins, Alan. Contemporary Security Studies. 3rd ed. Oxford: Oxford University Press, 2013.
Cita MLA (9th ed.)Collins, Alan. Contemporary Security Studies. 3rd ed. Oxford University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.