DFID Labour Standards and Poverty Reduction, 2007. Labour Standards in Public Procurement.
European Parliament and Council of the European Union, 2014, Directive on public procurement and repealing Directive 2014/18/EC.
International Corporate Accountability Roundtable, 2014, Turning a Blind Eye? Respecting human rights in government purchasing.
Northern Ireland Human Rights Commission, 2013, Public procurement and human rights in Northern Ireland.
Walk Free Foundation, 2015. Modern slavery in supply chains: an introduction for procurement professionals