APA (7th ed.) Citation

West, N. (2019). MI5: British security service operations, 1909-1945. Frontline Books.

Chicago Style (17th ed.) Citation

West, Nigel. MI5: British Security Service Operations, 1909-1945. Barnsley, South Yorkshire, UK: Frontline Books, 2019.

MLA (9th ed.) Citation

West, Nigel. MI5: British Security Service Operations, 1909-1945. Frontline Books, 2019.

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