APA (7th ed.) Citation

Andrew, C. M. (2009). Defend the realm: The authorized history of MI5 (1st U.S. ed.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Andrew, Christopher M. Defend the Realm: The Authorized History of MI5. 1st U.S. ed. New York: Alfred A. Knopf, 2009.

MLA (9th ed.) Citation

Andrew, Christopher M. Defend the Realm: The Authorized History of MI5. 1st U.S. ed. Alfred A. Knopf, 2009.