
https://weekly.blog.gustavus.edu/2014/09/11/the-true-cost-of-the-assembly-line/

https://www.progressivepolicy.org/wp-content/uploads/2021/12/PPI_Natural-GasDec2021.pdf

https://www.christianaid.org.uk/sites/default/files/2019-12/Counting-the-cost-2019-report-embargoed-27Dec19.pdf