Cita APA
Richelson, J. (1995). A century of spies: Intelligence in the twentieth century. Oxford University Press.
Citación estilo Chicago
Richelson, Jeffrey. A Century of Spies: Intelligence in the Twentieth Century. New York: Oxford University Press, 1995.
Cita MLA
Richelson, Jeffrey. A Century of Spies: Intelligence in the Twentieth Century. Oxford University Press, 1995.
Warning: These citations may not always be 100% accurate.