APA (7th ed.) Citation

Denning, P. J. (1990). Computers under attack: Intruders, worms, and viruses. ACM Press.

Chicago Style (17th ed.) Citation

Denning, Peter J. Computers Under Attack: Intruders, Worms, and Viruses. New York: ACM Press, 1990.

MLA (9th ed.) Citation

Denning, Peter J. Computers Under Attack: Intruders, Worms, and Viruses. ACM Press, 1990.