[1] The Contacts API (2010-01-20 21:39:24 +09:00 版) <http://www.w3.org/TR/2010/WD-contacts-api-20100121/>

[2] Contacts Manager API ( (2013-03-06 00:33:06 +09:00 版)) <http://www.w3.org/TR/2013/WD-contacts-manager-api-20130307/>