Timms, N. (2014). CCIE Security v4.0 LiveLessons (Video Training) (1st edition.). Cisco Press.
Cita Chicago Style (17a ed.)Timms, Natalie. CCIE Security V4.0 LiveLessons (Video Training). 1st edition. Cisco Press, 2014.
Cita MLA (9a ed.)Timms, Natalie. CCIE Security V4.0 LiveLessons (Video Training). 1st edition. Cisco Press, 2014.
Precaución: Estas citas no son 100% exactas.
