APA (7th ed.) Citation

Empson, S., & Roth, H. (2008). CCNP ONT portable command guide. Cisco Press.

Chicago Style (17th ed.) Citation

Empson, Scott, and Hans Roth. CCNP ONT Portable Command Guide. Indianapolis, Ind: Cisco Press, 2008.

MLA (9th ed.) Citation

Empson, Scott, and Hans Roth. CCNP ONT Portable Command Guide. Cisco Press, 2008.