Source:"The Role of the Media in Promoting and Reducing Tobacco Use. Tobacco Control Monograph No. 19." U.S. Department of Health and Human Services, National Institutes of Health, National Cancer Institute. Bethesda, MD. June 2008.
Source:Cullen, Jennifer, et al. "Depictions of Tobacco Use in 2007 Broadcast Television Programming Popular Among US Youth." Archives of Pediatric and Adolescent Medicine. 165(2). 07 Feb. 2011: 147-151. Web.