1. Modern Slavery: The Secret World of 27 Million People, Kevin Bales, Zoe Trodd, Alex Kent Williamson, Oneworld Publications (2009)
  2. The Slave Next Door: Human Trafficking and Slavery in America Today, Kevin Bales and Ron Soodalter, California Press (2010)
  3. Scars Across Humanity: Understanding and Overcoming Violence Against Women, Elaine Storkey, SPCK Publishing (2015)
  4. Eyes Wide Open: Understanding Sex Trafficking (TED Talk)
  5. Sex Trafficking: How it Works (The Centre for Investigative Reporting)
  6. Nefarious: Merchant of Souls | A Documentary on the Global Sex Trade
  7. Sexual Exploitation and Prostitution and its Impact on Gender Equalty, a collaborative study produced for the European Parliament’s Committee on Women’s Rights and Gender Equality
  8. ‘Factsheet: Understanding human trafficking and slavery’ by World Vision Action
  9. International Justice Mission website