Reference

Helpguide. (2012). How to quit smoking. Retrieved May 1, 2012,

from http://www.helpguide.org/mental/quit_smoking_cessation.htm

Best Quit Smoking Product. (2012). Retrieved May 1, 2012, 

from http://www.bestquitsmokingproduct.com/relieving-unpleasant-feelings-without-cigarettes/

Richard Trubo. (2012). Alternatives for giving up cigarettes. Retrieved May 1, 2012, from  http://www.webmd.com/smoking-cessation/features/quit-smoking-alternatives

Harmful health effects of smoking. (2012). Retrieved May 1, 2012, from 

http://www.stop-smoking-programs.org/effects-of-smoking.html

Risk factors. (2011). Retrieved May 2, 2012, from http://www.cdc.gov/cancer/lung/basic_info/risk_factors.htm

Smoking lung cancer facts (2012). Retrieved May 2, 2012, from 

http://www.stop-smoking-programs.org/lung-cancer.html

What are the risks of smoking (2011). Retrieved May 2, 2012, from 

http://www.nhlbi.nih.gov/health/health-topics/topics/smo/risks.html

Smoking face the facts (2009). Retrieved May 2, 2012,
from http://www.facethefacts.org.nz/facts

Smoking not our future (2010) Retrieved May 2, 2012,
from http://www.notourfuture.co.nz/

Emphysema (2012). Retrieved May 2, 2012,
from http://en.wikipedia.org/wiki/Emphysema