Eve Maler; et al. <a href="http://www.w3.org/TR/2008/WD-xlink11-20080331"><cite>XML Linking Language (XLink) Version 1.1.</cite></a> 31 March 2008. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2008/WD-xlink11-20080331">http://www.w3.org/TR/2008/WD-xlink11-20080331</a>