1. Abel, G., Fitzgerald, L., & Brunton, C. (2009). The impact of decriminalization on the number of sex workers in New Zealand. Journal of Social Policy, 38, 515–531.
2. Agustin, L. (2007). Sex at the margins: Migration, labour markets and the rescue industry. London: Zed.
3. Attorney General. (2004). Report to Congress on U.S. government efforts to combat trafficking in persons in fiscal year 2003. Washington: U.S. Department of Justice.
4. Attorney General. (2005). Report to Congress on U.S. government efforts to combat trafficking in persons in fiscal year 2004. Washington: U.S. Department of Justice.
5. BBC World News. (2008). Brothel industry is “spreading.” Retrieved June 15, 2009, from http://news.bbc.co.uk/2/hi/uk_news/england/london/7597232.stm , September 4.