APA (7th ed.) Citation

Hastings, M. (2015). The secret war: Spies, codes and guerrillas 1939-45. William Collins.

Chicago Style (17th ed.) Citation

Hastings, Max. The Secret War: Spies, Codes and Guerrillas 1939-45. London: William Collins, 2015.

MLA (8th ed.) Citation

Hastings, Max. The Secret War: Spies, Codes and Guerrillas 1939-45. William Collins, 2015.