Proclamation of Commonwealth of Australia as a federal union of the six: colonies (to come into force Jan. 1st 1901), passed by the British Parliament.
Citation:
Editors. "Act to Constitute the Commonwealth of Australia".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=10524, accessed 22 May 2013.]