History of fireworks-Refrences

        Bennett, J. (n.d.). Fireworks Magazine - History of Fireworks. Fireworks Magazine - homepage. Retrieved October 31, 2011, from http://www.fireworks-mag.org/history.html

      Bradley, C. (n.d.). History of Fireworks. Pyro Universe. Retrieved October 31, 2011, from www.pyrouniverse.com/history.html

       Conkling, J., & Decker, M. (n.d.). Chemical of the Week -- Fireworks!. Science is Fun in the Lab of Shakhashiri. Retrieved October 31, 2011, from      http://scifun.chem.wisc.edu/chemweek/fireworks/fireworks.htm

       Fireworks - Wikipedia, the free encyclopedia. (n.d.). Wikipedia, the free encyclopedia. Retrieved October 31, 2011, from http://en.wikipedia.org/wiki/Fireworks

      Lavoisier. (n.d.). Gunpowder - Wikipedia, the free encyclopedia. Wikipedia, the free encyclopedia. Retrieved October 31, 2011, from http://en.wikipedia.org/wiki/Gunpowder

       Wolchover, N. (2011, July 1). How Do Fireworks Make Shapes?. Life's Little Mysteries. Retrieved October 31, 2011, from www.lifeslittlemysteries.com/fireworks-shapes-patterns-pyrotechnics-1821/