APA (7th ed.) Citation

Hennessy, P. (2002). The secret state: Whitehall and the Cold War. Allen Lane.

Chicago Style (17th ed.) Citation

Hennessy, Peter. The Secret State: Whitehall and the Cold War. London: Allen Lane, 2002.

MLA (9th ed.) Citation

Hennessy, Peter. The Secret State: Whitehall and the Cold War. Allen Lane, 2002.

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