https://www.socialeurope.eu/becoming-like-germany-hurdles-and-dilemmas
https://www.omfif.org/analysis/commentary/2017/june/uk-risks-falling-behind-europe/
https://www.icij.org/investigations/trafficking-inc/audits-aimed-at-flagging-labor-abuses-are-designed-to-fail-investigation-finds/
https://www.igi-global.com/pdf.aspx?tid=319023&ptid=278239&ctid=4&oa=true&isxn=9781683183105