APA (7th ed.) Citation

Empson, S., Gargano, P., & Roth, H. (2015). CCNP routing and switching portable command guide. Cisco Press.

Chicago Style (17th ed.) Citation

Empson, Scott, Patrick Gargano, and Hans Roth. CCNP Routing and Switching Portable Command Guide. Indianapolis, Indiana: Cisco Press, 2015.

MLA (9th ed.) Citation

Empson, Scott, et al. CCNP Routing and Switching Portable Command Guide. Cisco Press, 2015.