<https://www.nzno.org.nz/resources/library/library_newsletter/artmid/4773/articleid/936/issue-43---13-dec-2012>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.nzno.org.nz/resources/library/library_newsletter/artmid/4773/articleid/936/issue-43---13-dec-2012>