Cita APA (7th ed.)

Hucaby, D., Garneau, D., & Sequeira, A. (2012). CCNP security firewall 642-617 official cert guide. Cisco Press.

Cita Chicago (17th ed.)

Hucaby, Dave, Dave Garneau, i Anthony Sequeira. CCNP Security Firewall 642-617 Official Cert Guide. Indianapolis, Ind: Cisco Press, 2012.

Cita MLA (9th ed.)

Hucaby, Dave, et al. CCNP Security Firewall 642-617 Official Cert Guide. Cisco Press, 2012.