Cita APA (7a ed.)

Sinnreich, H., & Johnston, A. B. (2001). Internet communications using SIP: Delivering VoIP and multimedia services withsession initiation protocol. John Wiley.

Cita Chicago Style (17a ed.)

Sinnreich, Henry, y Alan B. Johnston. Internet Communications Using SIP: Delivering VoIP and Multimedia Services Withsession Initiation Protocol. New York: John Wiley, 2001.

Cita MLA (8a ed.)

Sinnreich, Henry, y Alan B. Johnston. Internet Communications Using SIP: Delivering VoIP and Multimedia Services Withsession Initiation Protocol. John Wiley, 2001.