• Ryan, Jordan and Matthew, R, J and M (2001). Math mania. Retrieved March 16, 2007, from Math mania Web site: http://library.thinkquest.org/J0110961/
• Aaron,Anne Marie, John and Pat, A, J. A, P (1999). Fibonacci freaks. Retrieved March 16, 2007, from Fibonacci freaks Web site: http://library.thinkquest.org/5906/
• (2007 March 14). religion. Retrieved March 16, 2007, from wikipedia Web site: http://en.wikipedia.org/wiki/Religion
• Special thanks to Innocent de Marchi, maths teacher and Margalida Ors, art teacher