Cities of Australia

http://en.wikipedia.org/wiki/Australia#Economy

http://www.cnbc.com/id/100418357

http://en.wikipedia.org/wiki/List_of_cities_in_Australia_by_population#Greater_Capital_City_Statistical_Areas.2FSDs_by_population

http://jfdatalinks.blogspot.ca/2013/02/global-megacities.html

http://jfdatalinks.blogspot.ca/2013/01/greatest-cities-in-human-history.html