
https://foreignaffairs.house.gov/_cache/files/a/5/a51ee680-e339-4a1b-933f-b15e535fa103/AA2A3440265DDE42367A79D4BCBC9AA1.whdpc-final-report-2020-11.30.pdf

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20003en.pdf

https://emmaclancy.files.wordpress.com/2018/07/apple-tax-structure-and-rate-post-2014.pdf