[1]
[CITE@en[XHTML-Print - Second Edition]] ([TIME[2008-10-19 10:54:27 +09:00]] 版) <http://www.w3.org/MarkUp/2008/ED-xhtml-print-20081018/>

[2] [CITE@en[XHTML-Print - Second Edition]] ([TIME[2009-05-07 23:48:14 +09:00]] 版) <http://www.w3.org/TR/2009/PER-xhtml-print-20090507/>