Anne van Kesteren. <a href="http://www.w3.org/TR/2008/WD-XMLHttpRequest2-20080930"><cite>XMLHttpRequest Level 2.</cite></a> 30 September 2008. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2008/WD-XMLHttpRequest2-20080930">http://www.w3.org/TR/2008/WD-XMLHttpRequest2-20080930</a>