"Smoking – Health Risks." Netdoctor. N.p., n.d. Web. 06 Mar.
2014.
"Effects of Smoking on Your Health." Health Effects of Smoking.
N.p., n.d. Web. 04
Mar. 2014.
"Health Effects of Cigarette Smoking." Centers for Disease
Control and Prevention. Centers for Disease Control and
Prevention, 06 Feb. 2014. Web. 04 Mar. 2014.