[1] RDF Interfaces ( (2012-06-21 11:52:59 +09:00 版)) http://www.w3.org/2010/02/rdfa/sources/rdf-interfaces/Overview-src.html

[2] RDF Interfaces 1.0 ( (2011-05-10 03:34:16 +09:00 版)) http://www.w3.org/TR/2011/WD-rdf-interfaces-20110510/

[3] RDF Interfaces ( (2012-07-06 04:13:21 +09:00 版)) http://www.w3.org/TR/2012/NOTE-rdf-interfaces-20120705/