APA (7e ed.) Bronvermelding
ebrary, Inc, & Copeland, B. J. (2006). Colossus: The secrets of Bletchley Park's codebreaking computers. Oxford University Press.
Chicago (17e ed.) Bronvermelding
ebrary, Inc, en B. Jack Copeland. Colossus: The Secrets of Bletchley Park's Codebreaking Computers. Oxford ; New York: Oxford University Press, 2006.
MLA (9e ed.) Bronvermelding
ebrary, Inc, en B. Jack Copeland. Colossus: The Secrets of Bletchley Park's Codebreaking Computers. Oxford University Press, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.