APA (7th ed.) Citation

Twigge, S. R., Hampshire, E., & Macklin, G. (2008). British intelligence: Secrets, spies and sources. National Archives.

Chicago Style (17th ed.) Citation

Twigge, Stephen Robert, Edward Hampshire, and Graham Macklin. British Intelligence: Secrets, Spies and Sources. Kew [England]: National Archives, 2008.

MLA (9th ed.) Citation

Twigge, Stephen Robert, et al. British Intelligence: Secrets, Spies and Sources. National Archives, 2008.

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