Recomendação n.º 204 (2015) sobre a Transição da Economia Informal para a Formal da OIT
https://www.social-protection.org/gimi/ShowRessource.action?lang=EN&ressource.ressourceId=54927
https://www.social-protection.org/gimi/ShowRessource.action?lang=EN&ressource.ressourceId=54927
https://www.ilo.org/wcmsp5/groups/public/—europe/—ro-geneva/—ilo-lisbon/documents/publication/wcms_795516.pdf