APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.