1. http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=40386
. Accessed Feb 2012
2. http://earthquake.usgs.gov
. Accessed Sept 2011
3. http://earthquake.usgs.gov/earthquakes/eqinthenews/2009/us2009lbat/#details
. Accessed Sept 2011
4. http://www.theage.com.au
. Accessed Sept 2011
5. http://www.theage.com.au/world/40-dead-as-powerful-earthquake-rocks-java-20090902-f8ka.html
. Accessed Feb 2012