APA (7th ed.) Citation

Hastings, M. (2016). The secret war: Spies, ciphers, and guerrillas, 1939-1945.

Chicago Style (17th ed.) Citation

Hastings, Max. The Secret War: Spies, Ciphers, and Guerrillas, 1939-1945. 2016.

MLA (8th ed.) Citation

Hastings, Max. The Secret War: Spies, Ciphers, and Guerrillas, 1939-1945. 2016.

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