1. Substance Abuse and Mental Health Services Administration. Results from the 2013 National Survey on Drug Use and Health: summary of national findings. Rockville, MD: Substance Abuse and Mental Health Services Administration; 2014. http://www.samhsa.gov/data/sites/default/files/NSDUHresultsPDFWHTML2013/Web/NSDUHresults2013.pdf
2. Health behaviors and risk factors among American Indians and Alaska Natives, 2000–2010.;Cobb;Am J Public Health,2014
3. Sampling and estimation in hidden populations using respondent-driven sampling.;Salganik;Sociol Methodol,2004
4. American Indian Adult Tobacco Survey Work Group. In: Weber J, Thorne S, eds. American Indian adult tobacco survey implementation manual. Atlanta, GA: US Department of Health and Human Services, CDC; 2008. http://www.cdc.gov/tobacco/data_statistics/surveys/american_indian/pdfs/ai_ats.pdf
5. ClearWay Minnesota; Minnesota Department of Health. Tobacco use in Minnesota: 2010 update. Minneapolis, MN: ClearWay Minnesota; 2011. http://www.health.state.mn.us/divs/chs/tobacco/mats2010finalfeport.pdf