Bibliography
Great American Smokeout. Old Dominion University <http://www.odu.edu/ao/student_serv/smokeout/harmful_health_eff.htm>
Office of Nutrition Policy and Promotion. Health Canada. 1 October, 2002 <http://www.hc-sc.ca/hpfb-dgsa/onpp-bppn/food_guide_rainbow_e.html>
Improved Sporting Ability. The Calm Research Center. 2001 <http://www.calm.com.au/pages/02sports.shtml>