APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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