Vidur Apparao; Philippe Le H&#233;garet; Chris Wilson. <a href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113"><cite>Document Object Model (DOM) Level 2 Style Specification.</cite></a> 13 November 2000. W3C Recommendation. URL: <a href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113">http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113</a>