APA (7th ed.) Citation

Burns, D., Adesina, O., & Barker, K. (2012). CCNP security IPS 642-627 official cert guide. Cisco Press.

Chicago Style (17th ed.) Citation

Burns, David, Odunayo Adesina, and Keith Barker. CCNP Security IPS 642-627 Official Cert Guide. Indianapolis, Ind: Cisco Press, 2012.

MLA (9th ed.) Citation

Burns, David, et al. CCNP Security IPS 642-627 Official Cert Guide. Cisco Press, 2012.