Bibliography

http://useconomy.about.com/od/grossdomesticproduct/f/katrina_damage.htm

http://www.answers.com/Q/What_are_the_positive_and_negative_effects_of_Hurricane_Katrina

https://www.dosomething.org/facts/11-facts-about-hurricane-katrina

http://www.history.com/topics/hurricane-katrina