Zhi Wei Shuang (&#21452;&#24535;&#20255;); Daniel C. Burnett. <a href="http://www.w3.org/TR/2008/CR-speech-synthesis11-20081107"><cite>Speech Synthesis Markup Language (SSML) Version 1.1.</cite></a> 7 November 2008. W3C Candidate Recommendation. (Work in progress.) URL: <a href="http://www.w3.org/TR/2008/CR-speech-synthesis11-20081107">http://www.w3.org/TR/2008/CR-speech-synthesis11-20081107</a>