- UN Guiding Principles on Business and Human Rights
https://www.ohchr.org/Documents/Publications/GuidingPrinciplesBusinessHR_EN.pdf

- Electronics Watch, Public Procurement and Human Rights Due Diligence to Achieve Respect for Labour Rights Standards in Electronics Factories: A Case Study of the Swedish County Councils and the Dell Computer Corporation
http://electronicswatch.org/en/public-procurement-human-rights-due-diligence-a-case-study-of-the-swedish-county-councils-and-the-dell-computer-corporation-february-2016_2456642.pdf

- International Learning Lab on Public Procurement and Human Rights, Public Procurement and Human Rights: A Survey of Twenty Jurisdictions
https://www.hrprocurementlab.org/wp-content/uploads/2016/06/Public-Procurement-and-Human-Rights-A-Survey-of-Twenty-Jurisdictions-Final.pdf

- London Universities Purchasing Consortium, University of Greenwich, Chartered Institute of Procurement and Supply, Protecting human rights in the supply chain: A guide for public procurement practitioners
https://www.hrprocurementlab.org/wp-content/uploads/2017/06/KnowledgeLUPC-ProtectingHumanRightsintheSupplyChain2.pdf

- OSCE Model Guidelines on Government Measures to Prevent Trafficking for Labour Exploitation in Supply Chains
https://www.osce.org/secretariat/371771?download=true

- OSCE, Compendium of relevant reference materials and resources on ethical sourcing and prevention of trafficking in human beings for labour exploitation in supply chains
https://www.osce.org/secretariat/375910

- OECD Responsible business conduct in government procurement practices
https://mneguidelines.oecd.org/Responsible-business-conduct-in-government-procurement-practices.pdf