Internet communications using SIP: delivering VoIP and multimedia services with session initiation protocol (2nd ed.)by Henry Sinnreich & Alan B. Johnston, 2006
Social media mining: an introductionby R. Zafarani, M.A Abbasi & H. Liu
The internet encyclopedia, volume 3edited by Hossein Bidgoli, 2004
The internet for dummies (12th ed.)by John R. Levine & Margaret Levine Young, 2009
