Cita APA (7a ed.)

Cisco Systems, Inc, & Wallace, K. A. (2007). Authorized self-study guide: Cisco Voice over IP (CVoice (2nd ed.). Cisco Press.

Cita Chicago Style (17a ed.)

Cisco Systems, Inc, y Kevin Author Wallace. Authorized Self-study Guide: Cisco Voice over IP (CVoice. 2nd ed. [Place of publication not identified]: Cisco Press, 2007.

Cita MLA (9a ed.)

Cisco Systems, Inc, y Kevin Author Wallace. Authorized Self-study Guide: Cisco Voice over IP (CVoice. 2nd ed. Cisco Press, 2007.