APA (7th ed.) Citation

Aid, M. M. (2009). The secret sentry: The untold history of the National Security Agency (1st U.S. ed.). Bloomsbury Press.

Chicago Style (17th ed.) Citation

Aid, Matthew M. The Secret Sentry: The Untold History of the National Security Agency. 1st U.S. ed. New York: Bloomsbury Press, 2009.

MLA (8th ed.) Citation

Aid, Matthew M. The Secret Sentry: The Untold History of the National Security Agency. 1st U.S. ed. Bloomsbury Press, 2009.