APA (7th ed.) Citation

Hennessy. (2003). The secret state: Whitehall and the Cold War (Rev. and updated ed.). Penguin.

Chicago Style (17th ed.) Citation

Hennessy. The Secret State: Whitehall and the Cold War. Rev. and updated ed. London: Penguin, 2003.

MLA (8th ed.) Citation

Hennessy. The Secret State: Whitehall and the Cold War. Rev. and updated ed. Penguin, 2003.