APA (7th ed.) Citation

Leiss, E. L. (1990). Software under siege: : viruses and worms. Elsevier Advanced Technology.

Chicago Style (17th ed.) Citation

Leiss, Ernst L. Software Under Siege: : Viruses and Worms. Oxford: Elsevier Advanced Technology, 1990.

MLA (9th ed.) Citation

Leiss, Ernst L. Software Under Siege: : Viruses and Worms. Elsevier Advanced Technology, 1990.