APA-čujuhus (7. p.)
Johnston, A. B. (2004). SIP: Understanding the Session Initiation Protocol (2nd ed.). Artech House.
Chicago-čujuhus (17. p.)
Johnston, Alan B. SIP: Understanding the Session Initiation Protocol. 2nd ed. Boston: Artech House, 2004.
MLA-čujuhus (9. p.)
Johnston, Alan B. SIP: Understanding the Session Initiation Protocol. 2nd ed. Artech House, 2004.
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