APA引文

Snader,Jon.C. VPNs Illustrated Tunnels,VPNs, & Ipsec. Pearson Education.

Chicago Edition Citation

Snader,Jon.C. VPNs Illustrated Tunnels,VPNs, & Ipsec. Delhi: Pearson Education.

MLA引文

Snader,Jon.C. VPNs Illustrated Tunnels,VPNs, & Ipsec. Pearson Education.

警告：這些引文格式不一定是100％准確.