1. Australian Bureau of Statistics (ABS) 2006 Employee Earnings, Benefits and Trade Union Membership ABS 6310.0
2. Australian Bureau of Statistics (ABS) 2009 Employee Earnings, Benefits and Trade Union Membership ABS 6310.0
3. Australian Stock Exchange (ASX) 2011 http://www.asx.com.au/asx/research/listedCompanies.do