APA Style

Diffie, W., Landau, S, E. (2007). Privacy on the line :the politics of wiretapping and encryption (Updated and expanded ed.). Cambridge, Mass. ;: MIT Press,.

MLA Style

Diffie, Whitfield.., Landau, Susan, Eva.. "Privacy on the line :the politics of wiretapping and encryption". Updated and expanded ed. Cambridge, Mass. ;: MIT Press,, 2007. Text.