http://www.britishchambers.org.uk/press-office/press-releases/bcc-firms-invest-in-local-labour-but-still-need-foreign-skills-to-plug-shortages.html
http://www.britishchambers.org.uk/Workforce%20Survey%202017%20-%20Skills%20shortages.pdf
https://theconversation.com/fact-check-does-immigration-have-an-impact-on-wages-or-employment-83666
http://www.russellgroup.ac.uk/media/5521/rg-international-students-june-2017.pdf
http://berlinpolicyjournal.com/the-bottom-forty-percent-have-not-benefited/
http://odlisnost.cz/posts/pristehovalci-a-nase-zamestnani
https://www.brookings.edu/blog/brookings-now/2017/08/24/do-immigrants-steal-jobs-from-american-workers/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=55726788
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1711en.pdf
https://www.socialeurope.eu/beyond-fantasies-industry-4-0-global-capital-no-answers