Cita APA (7th ed.)

Lewis, W. (2005). CCNP 4: Network troubleshooting companion guide. Cisco Press.

Cita Chicago (17th ed.)

Lewis, Wayne. CCNP 4: Network Troubleshooting Companion Guide. Indianapolis, IN: Cisco Press, 2005.

Cita MLA (8th ed.)

Lewis, Wayne. CCNP 4: Network Troubleshooting Companion Guide. Cisco Press, 2005.