APA (7th ed.) Citation

Piper, F. C., & Murphy, S. (2002). Cryptography: A very short introduction (1st publ. as a very short introduction.). Oxford University Press.

Chicago Style (17th ed.) Citation

Piper, F. C., and Sean Murphy. Cryptography: A Very Short Introduction. 1st publ. as a very short introduction. Oxford ; New York: Oxford University Press, 2002.

MLA (9th ed.) Citation

Piper, F. C., and Sean Murphy. Cryptography: A Very Short Introduction. 1st publ. as a very short introduction. Oxford University Press, 2002.