APA (7th ed.) Citation

Diffie, W., & Landau, S. E. (2007). Privacy on the line: The politics of wiretapping and encryption (Update and expanded edition.). MIT Press.

Chicago Style (17th ed.) Citation

Diffie, Whitfield, and Susan Eva Landau. Privacy on the Line: The Politics of Wiretapping and Encryption. Update and expanded edition. Cambridge, MA: MIT Press, 2007.

MLA (9th ed.) Citation

Diffie, Whitfield, and Susan Eva Landau. Privacy on the Line: The Politics of Wiretapping and Encryption. Update and expanded edition. MIT Press, 2007.

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