http://odlisnost.cz/posts/pristehovalci-a-nase-zamestnani
https://economicgraph.linkedin.com/resources/linkedin-workforce-report-uk-april-2018
https://www.researchgate.net/publication/351524462_HesaMag_23_-_with_a_special_report_about_workers_in_the_food_chain/link/609bfc9b458515a04c638ff6/download
https://www.boeckler.de/pdf/p_imk_report_141e_2018.pdf