[1] Uniform Messaging Policy, Level One (2010-01-27 00:06:51 +09:00 版) http://www.w3.org/TR/2010/WD-UMP-20100126/

[2] Uniform Messaging Policy, Level One (2014-09-30 18:47:45 +09:00 版) http://www.w3.org/TR/2014/NOTE-UMP-20141002/

Work on this document has been discontinued and it should not be referenced or used as a basis for implementation.

[3] Uniform Messaging Policy, Level One (2014-09-30 18:42:42 +09:00 版) http://dev.w3.org/2006/waf/UMP/