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.
Source:SMITH EA, OFFEN N, MALONE RE. Pictures Worth a Thousand Words: Noncommercial Tobacco Content in the Lesbian, Gay, and Bisexual Press. Journal of health communication. 2006;11(7):635-649. doi:10.1080/10810730600934492.
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.