Edwards, J., Bramante, R., & Martin, A. (2006). Nortel guide to VPN routing for security and VoIP. Indianapolis, IN : Wiley Pub..
Lua i Stíl Chicago (17ú heag.)Edwards, James, Richard Bramante, agus Al Martin. Nortel Guide to VPN Routing for Security and VoIP. Indianapolis, IN : Wiley Pub., 2006.
Lua MLA (9ú heag.)Edwards, James, et al. Nortel Guide to VPN Routing for Security and VoIP. Indianapolis, IN : Wiley Pub., 2006.
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