Cita APA (7a ed.)

Valentine, M., & Barker, K. (2014). Cisco CCNA routing and switching 200-120 (Fourth edition.). Pearson Education.

Cita Chicago Style (17a ed.)

Valentine, Michael, y Keith Barker. Cisco CCNA Routing and Switching 200-120. Fourth edition. [Place of publication not identified]: Pearson Education, 2014.

Cita MLA (8a ed.)

Valentine, Michael, y Keith Barker. Cisco CCNA Routing and Switching 200-120. Fourth edition. Pearson Education, 2014.