Kyas,Othmar. (1997). Internet security: Risk analysis, strategies and firewalls. International Thomson Computer Press.
Citazione stile Chigago Style (17a edizione)Kyas,Othmar. Internet Security: Risk Analysis, Strategies and Firewalls. London: International Thomson Computer Press, 1997.
Citatione MLA (9a ed.)Kyas,Othmar. Internet Security: Risk Analysis, Strategies and Firewalls. International Thomson Computer Press, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.