How Gatorade Compares: © Gatorade 2002; October 10 2002 <http://www.gatorade.com/products_perform/thirst_quench/compare.html>

Sports Drinks: © Sports Coach, January 1, 1997: October 10, 2002<http://www.brianmac.demon.co.uk/drinks.htm>

Guide to Sport Drinks: ©Running Times Magazine, July/August 2001:  October 15, 2002 <http://www.runningtimes.com/issues/01julaug/gels.htm>

Water and Sport Drinks For Walkers: © 2002 About.com; October 15, 2002 <http://walking.about.com/library/weekly/aa072500b.htm>

Sports Drinks: October 15, 2002 <http://www.elkgrove-soccer.com/select/Forms/Sports%20Drinks.htm> (No further information given)

Sports Science, Sports Drinks in General: ©GlaxoSmithKline, 2001; October 18, 2002 <http://www.lucozadesport.com/lucozade/wwwroot/1d.asp>