Percy, S. (2007). Mercenaries: The History of a Norm in International Relations. Oxford University Press.
Chicago Style (17th ed.) CitationPercy, S. Mercenaries: The History of a Norm in International Relations. Oxford University Press, 2007.
MLA引文Percy, S. Mercenaries: The History of a Norm in International Relations. Oxford University Press, 2007.
警告：這些引文格式不一定是100％准確.