[1] [CITE[]] ([[Ian Hickson ]] 著, [TIME[2008-11-26 03:48:07 +09:00]] 版)
[2] [CITE['''['''whatwg''']''' Adding alpha channel to ]]
([TIME[2009-09-04 18:09:44 +09:00]] 版)
[3] [CITE[IRC logs: freenode / #whatwg / 20090826]]
([TIME[2009-10-15 22:55:13 +09:00]] 版)
[4] [CITE[Bug 28966 – '''['''HTML5''']''''''['''Forms''']''' simple implementation]]
([TIME[2009-12-27 18:51:30 +09:00]] 版)