Omand. Principled Spying. Georgetown University Press.
芝加哥风格引文Omand. Principled Spying. Georgetown University Press.
MLA引文Omand. Principled Spying. Georgetown University Press.
警告：这些引文格式不一定是100％准确.
APA引文
Omand. Principled Spying. Georgetown University Press.
芝加哥风格引文Omand. Principled Spying. Georgetown University Press.
MLA引文Omand. Principled Spying. Georgetown University Press.