[1] [CITE@EN[Voice Extensible Markup Language (VoiceXML) 3.0]] ([TIME[2008-12-16 04:20:32 +09:00]] 版) <http://www.w3.org/TR/2008/WD-voicexml30-20081219/>

[2] [CITE@EN[Voice Extensible Markup Language (VoiceXML) 3.0]]
([TIME[2009-12-03 04:09:08 +09:00]] 版)
<http://www.w3.org/TR/2009/WD-voicexml30-20091203/>