Sinnreich, H., & Johnston, A. B. (2006). Internet communications using SIP: Delivering VoIP and multimedia services with Session Initiation Protocol (2nd ed.). Wiley Pub.
Čikaški stil citiranja (17. izdanje)Sinnreich, Henry, i Alan B. Johnston. Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol. 2nd ed. Indianapolis: Wiley Pub, 2006.
MLA način citiranja (9. izdanje)Sinnreich, Henry, i Alan B. Johnston. Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol. 2nd ed. Wiley Pub, 2006.
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