http://publications.iom.int/system/files/pdf/global_migration_indicators_2018.pdf
https://es.insightcrime.org/noticias/analisis/gamechangers-2018-crimen-ideologia/
https://www.unhcr.org/gcr/GCR_English.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/766465/The-UKs-future-skills-based-immigration-system-print-ready.pdf
http://HTTPS://WWW.NRC.NL/NIEUWS/2018/12/07/DIE-INFO-OORLOG-WAS-DE-BEDOELING-A3059908?FBCLID=IWAR34TL6J7DLM_CVARMMSXYYNR1MUQKQY-NIIZI4TSDFCC-K0V2HQGZMKHE4&UTM_SOURCE=POLITICO.EU&UTM_CAMPAIGN=DACEE2ECC0-EMAIL_CAMPAIGN_2018_12_1
https://www.llri.lt/wp-content/uploads/2018/06/Labour-Migration_3.pdf
https://apnews.com/e509e15f8b074b1d984f97502eab6a25
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/741926/Final_EEA_report.PDF
http://www.cbi.org.uk/index.cfm/_api/render/file/?method=inline&fileID=4232B592-ACCC-40DB-9338BA0A97198435
https://www.government.nl/documents/speeches/2018/09/24/speech-by-the-minister-of-foreign-affairs-stef-blok-to-kick-off-a-lunchtime-session-on-%E2%80%98action-against-human-trafficking-sanctions-accountability-and-the-rule-of-law%E2%80%99