Copeland, B. J. (2020). Colossus: The secrets of Bletchley Park's codebreaking computers. Oxford University Press.
Chicago Style (17th ed.) CitationCopeland, B. Jack. Colossus: The Secrets of Bletchley Park's Codebreaking Computers. Oxford: Oxford University Press, 2020.
MLA (9th ed.) CitationCopeland, B. Jack. Colossus: The Secrets of Bletchley Park's Codebreaking Computers. Oxford University Press, 2020.
Warning: These citations may not always be 100% accurate.