--- a/about.php
+++ b/about.php
@@ -9,7 +9,8 @@
 <h2> What is this? </h2>
 Disclo.gs is a project to monitor Australian Federal Government agencies 
 compliance with their <a href="http://www.oaic.gov.au/publications/other_operational/foi_policy_frequently_asked_questions.html#_Toc291837571">"proactive disclosure requirements"</a>.
-
+<h2> Attributions </h2>
+National Archives of Australia, Australian Governments’ Interactive Functions Thesaurus, 2nd edition, September 2005, published at http://www.naa.gov.au/recordkeeping/thesaurus/index.htm.
 
 <h2> Open everything </h2>
 All documents released CC-BY 3 AU