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4. Federal Trade Commission. Federal Trade Commission cigarette report for 2013. Washington, DC: Federal Trade Commission; 2016. https://www.ftc.gov/system/files/documents/reports/federal-trade-commission-cigarette-report-2013/2013cigaretterpt.pdf
5. Federal Trade Commission. Federal Trade Commission smokeless Tobacco report for 2013. Washington, DC: Federal Trade Commission; 2016. https://www.ftc.gov/system/files/documents/reports/federal-trade-commission-smokeless-tobacco-report-2013/2013tobaccorpt.pdf