Cita APA (7a ed.)

Matei, C. (2011). CCNP security VPN 642-647 quick reference. Cisco Press.

Cita Chicago Style (17a ed.)

Matei, Cristian. CCNP Security VPN 642-647 Quick Reference. Indianapolis, Ind.: Cisco Press, 2011.

Cita MLA (8a ed.)

Matei, Cristian. CCNP Security VPN 642-647 Quick Reference. Cisco Press, 2011.