Cita APA (7a ed.)

Mungo, P., & Clough, B. (1992). Approaching zero: The extraordinary underworld of hackers, phreakers, virus writers, and keyboard criminals. Random House.

Cita Chicago Style (17a ed.)

Mungo, Paul, y Bryan Clough. Approaching Zero: The Extraordinary Underworld of Hackers, Phreakers, Virus Writers, and Keyboard Criminals. New York: Random House, 1992.

Cita MLA (8a ed.)

Mungo, Paul, y Bryan Clough. Approaching Zero: The Extraordinary Underworld of Hackers, Phreakers, Virus Writers, and Keyboard Criminals. Random House, 1992.