APA (7th ed.) Citation

Liu, H. Voice over IP signaling: H.323 and beyond. IEEE Communications magazine.

Chicago Style (17th ed.) Citation

Liu, Hong. "Voice over IP Signaling: H.323 and Beyond." IEEE Communications Magazine .

MLA (9th ed.) Citation

Liu, Hong. "Voice over IP Signaling: H.323 and Beyond." IEEE Communications Magazine, .

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