APA (7th ed.) Citation

Schulzrinne, H. The Session Initiation Protocol: Internet-centric signaling. IEEE Communications magazine.

Chicago Style (17th ed.) Citation

Schulzrinne, H. "The Session Initiation Protocol: Internet-centric Signaling." IEEE Communications Magazine .

MLA (9th ed.) Citation

Schulzrinne, H. "The Session Initiation Protocol: Internet-centric Signaling." IEEE Communications Magazine, .

Warning: These citations may not always be 100% accurate.