[1] [CITE@en-GB-hixie[Web Controls 1.0]]
( ([TIME[2004-11-09 08:49:52 +09:00]] 版))
<http://www.whatwg.org/specs/web-controls/current-work/#pseudo-classes>

[2] [CITE@en-GB-hixie[Web Applications Markup Language 1.0]]
( ([TIME[2004-04-08 02:39:12 +09:00]] 版))
<http://hixie.ch/specs/html/apps/web-apps-1#pseudo-classes>

[3] [CITE@en[Web Applications 1.0 r7977     Define window.close; update the list of members exposed cross-origin on Window to match reality]]
( ([TIME[2013-06-15 03:28:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7976&to=7977>