APA (7th ed.) Citation

Downing, T. (2014). Secret warriors: Key scientists, code breakers and propagandists of the Great War (1. publ.). Little, Brown.

Chicago Style (17th ed.) Citation

Downing, Taylor. Secret Warriors: Key Scientists, Code Breakers and Propagandists of the Great War. 1. publ. London: Little, Brown, 2014.

MLA (9th ed.) Citation

Downing, Taylor. Secret Warriors: Key Scientists, Code Breakers and Propagandists of the Great War. 1. publ. Little, Brown, 2014.