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:"Preventing Tobacco Use Among Youth and Young Adults: A Report of the Surgeon General Executive Summary." U.S. Department of Health and Human Services, Public Health Service, Office of the Surgeon General. 2012.