[1] RDF Interfaces ( (6/21/2012, 2:52:59 AM 版)) <http://www.w3.org/2010/02/rdfa/sources/rdf-interfaces/Overview-src.html>

[2] RDF Interfaces 1.0 ( (5/9/2011, 6:34:16 PM 版)) <http://www.w3.org/TR/2011/WD-rdf-interfaces-20110510/>

[3] RDF Interfaces ( (7/5/2012, 7:13:21 PM 版)) <http://www.w3.org/TR/2012/NOTE-rdf-interfaces-20120705/>