APA (7th ed.) Citation

Hughes-Wilson. (2016). On intelligence: The history of espionage and the secret world. Constable.

Chicago Style (17th ed.) Citation

Hughes-Wilson. On Intelligence: The History of Espionage and the Secret World. London: Constable, 2016.

MLA (8th ed.) Citation

Hughes-Wilson. On Intelligence: The History of Espionage and the Secret World. Constable, 2016.

Warning: These citations may not always be 100% accurate.