APA aipamena

Percy, S. (2007). Mercenaries: The History of a Norm in International Relations. Oxford University Press.

Chicago Style aipamena

Percy, S. Mercenaries: The History of a Norm in International Relations. Oxford University Press, 2007.

MLA aipamena

Percy, S. Mercenaries: The History of a Norm in International Relations. Oxford University Press, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.