1. United Nations Office on Drugs and Crime. Global Report on Trafficking in Persons 2014.
2. International Labour Organization. Profits and Poverty: The Economics of Forced Labour. May 20, 2014.
3. Department of Health and Human Services. Human trafficking into and within the United States: a review of the literature. 2009. Available at: https://aspe.hhs.gov/basic-report/human-trafficking-and-within-united-states-review-literature. Accessed January 4, 2016.
4. Banks D, Kyckelhahn T. Characteristics of suspected human trafficking incidents, 2008-2010. Special report, US Department of Justice. Available at: http://www.bjs.gov/content/pub/pdf/cshti0810.pdf. Accessed March 23, 2016.
5. National Human Trafficking Resource Center. Human trafficking trends in the United States 2007-2012. The Polaris Project Web site. Available at: https://polarisproject.org/resources/human-trafficking-trends-2007-2012. Accessed January 4, 2016.