Jim Larson. <a href="http://www.w3.org/TR/2006/NOTE-mmi-suggestions-20060911"><cite>Common Sense Suggestions for Developing Multimodal User Interfaces.</cite></a> 11 September 2006. W3C Note. URL: <a href="http://www.w3.org/TR/2006/NOTE-mmi-suggestions-20060911">http://www.w3.org/TR/2006/NOTE-mmi-suggestions-20060911</a>