Cita APA (7a ed.)

Walker, A. (2005). Absolute beginner's guide to security, spam, spyware and viruses. Que.

Cita Chicago Style (17a ed.)

Walker, Andy. Absolute Beginner's Guide to Security, Spam, Spyware and Viruses. Indianapolis, Ind.: Que, 2005.

Cita MLA (8a ed.)

Walker, Andy. Absolute Beginner's Guide to Security, Spam, Spyware and Viruses. Que, 2005.