1. Monitoring the Future National Results on Adolescent Drug Use: Overview of Key Findings, 2014;Johnston,2015
2. Tobacco use among middle and high school students—United States, 2011–2014;Arrazola;MMWR Morb Mortal Wkly Rep,2015
3. Tobacco use among middle and high school students—United States, 2013;Arrazola;MMWR Morb Mortal Wkly Rep,2014
4. Monitoring the Future. Table 1. Trends in prevalence of use of cigarettes in Grades 8, 10, and 12. www.monitoringthefuture.org/data/14data/14tobtbl1.pdf. Accessed August 10, 2015.
5. E-cigarette use among high school and middle school adolescents in Connecticut;Krishnan-Sarin;Nicotine Tob Res,2014