APA (7th ed.) Citation

Vachon, B., Graziani, R., & Schawohl, E. (2009). Wide Area Networks: CCNA exploration companion guide (1. [Aufl.].). Addison-Wesley.

Chicago Style (17th ed.) Citation

Vachon, Bob, Rick Graziani, and Ernst Schawohl. Wide Area Networks: CCNA Exploration Companion Guide. 1. [Aufl.]. München: Addison-Wesley, 2009.

MLA (9th ed.) Citation

Vachon, Bob, et al. Wide Area Networks: CCNA Exploration Companion Guide. 1. [Aufl.]. Addison-Wesley, 2009.