APA (7th ed.) Citation

West, N. (1999). Venona: The greatest secret of the Cold War. HarperCollins.

Chicago Style (17th ed.) Citation

West, Nigel. Venona: The Greatest Secret of the Cold War. London: HarperCollins, 1999.

MLA (8th ed.) Citation

West, Nigel. Venona: The Greatest Secret of the Cold War. HarperCollins, 1999.

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