APA (7th ed.) Citation

Empson, S. (2008). CCNA portable command guide (Second edition.). Cisco Press.

Chicago Style (17th ed.) Citation

Empson, Scott. CCNA Portable Command Guide. Second edition. Indianapolis: Cisco Press, 2008.

MLA (9th ed.) Citation

Empson, Scott. CCNA Portable Command Guide. Second edition. Cisco Press, 2008.

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