Cita APA (7a ed.)

Seagren, E. (2007). Secure your network for free: Using NMAP, Wireshark, Snort, Nessus, and MRTG (1st edition.). Syngress ; Elsevier Science [distributor].

Cita Chicago Style (17a ed.)

Seagren, Eric. Secure Your Network for Free: Using NMAP, Wireshark, Snort, Nessus, and MRTG. 1st edition. Rockland, MA : Oxford: Syngress ; Elsevier Science [distributor], 2007.

Cita MLA (9a ed.)

Seagren, Eric. Secure Your Network for Free: Using NMAP, Wireshark, Snort, Nessus, and MRTG. 1st edition. Syngress ; Elsevier Science [distributor], 2007.