A statutory declaration is a statement that allows you to "declare something to be true" - it is an offence to make a false declaration.

Links to information about stat decs, and links to all the states copies are here http://www.ag.gov.au/publications/pages/statutorydeclarations.aspx

This information includes who a stat dec can made before (signed by you) you can prefill all the other details.  It includes Drs, Chemists, Justice of the Peaces and others.