1. Global Estimate of Forced Labour: Results and Methodology,2012
2. Between decent work and forced labour: examining the continuum of exploitation;Skrivankova,2010
3. The International Law of Human Trafficking;Gallagher,2010
4. Forced labour and human trafficking: a handbook for labour inspectors;Andrees,2008
5. Abuse of a position of vulnerability and other ‘means’ within the definition of trafficking in persons,2013