http://www.ivillage.com/TWN/print/0,2707,42026,00.html

www.metabolife.com/

"Fast Food." World Book Encyclopedia, 1999.

www.searchoplis/fastfood.htm

www.yahoo.com

Gordon, Lea Guyer et.al. The Magic and Medicine of Plants. Pleasantville, New York: Readers’ Digest Association, 1989.

Asimov, Isaac. How did we find out about Vitamins? United States of America: Walker Publishing Company, Inc.1974

http//:www.vita-men.com/xnoplug/xmeetmen/xVGcdbk.htm

"Vitamins." The world Book Encyclopedia, 1999.

Berger, Gilda, The Human Body, New York New York: Doubleday, 1989

http://www.ajkids.com

http://www.mste.uiuc.edu/SNN/volno4.html

http://yucky.kids.discovery.com

Berger, Gilda, The Human Body, New York New York: Doubleday, 1989

http://www.ajkids.com

http://www.mste.uiuc.edu/SNN/volno4.html

http://yucky.kids.discovery.com

http://kidshealth.org/kid/talk/qa/hiccup.html

http://kidshealth.org/kid/talk/qa/hiccup_p2.html

http://kidshealth.org/kid/talk/yucky/burp.html

http://www.bartleby.com/61/34/e0203400.html

http://www.belch.com/defn.htm

http://www.drlockie.com/disease/belching.htm

http://www.diagnosishealth.com/discussion1/belching.htm

http://www.inxpress.net/~oastiennon/webdoc21.htm

http://www.medic-planet.com/mp_article/internal_reference/diaphram

http://www.oso.com/shared/health/adam/ency/article/003080.html

http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/stomach/

http://www.britannica.com/bcom/eb/article/printable/5/0,5722,108925,00.html

http://www.cag.ucalgary.ca/patinfo/html/esophagus.html

http://www.cag.ucalgary.ca/patinfo/html/stomach.html

http://www.cag.ucalgary.ca/patinfo/html/intestines.html

http://www.cag.ucalgary.ca/patinfo/html/gall_bladder.html

http://www.cag.ucalgary.ca/patinfo/html/liver.html

http://www.cag.ucalgary.ca/patinfo/html/pancreas.html

http://www.geocities.com/rootsghana/Nutrition/gastro.html

http://www.underwriting.co.za/Medical%201/Digestive%20System/digestiv.htm