Cita APA (7a ed.)

Garfinkel, S. (1995). PGP: Pretty good privacy (1st ed., minor corrections.). O'Reilly.

Cita Chicago Style (17a ed.)

Garfinkel, Simson. PGP: Pretty Good Privacy. 1st ed., minor corrections. Sebastopol, California: O'Reilly, 1995.

Cita MLA (9a ed.)

Garfinkel, Simson. PGP: Pretty Good Privacy. 1st ed., minor corrections. O'Reilly, 1995.