APA (7th ed.) Citation

Kerrigan, M. (2018). Enigma code breakers: How breaking the Nazi code helped win World War II. Amber Books.

Chicago Style (17th ed.) Citation

Kerrigan, Michael. Enigma Code Breakers: How Breaking the Nazi Code Helped Win World War II. London: Amber Books, 2018.

MLA (9th ed.) Citation

Kerrigan, Michael. Enigma Code Breakers: How Breaking the Nazi Code Helped Win World War II. Amber Books, 2018.

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