
http://www.lastampa.it/2016/06/27/italia/politica/rodot-quando-i-referendum-diventano-un-boomerang-JuXpMSRHAkJH5mE0mawMrL/pagina.html

https://www.occrp.org/en/37-ccblog/ccblog/13225-governments-have-failed-to-learn-from-the-cambridge-analytica-scand

https://www.crisisgroup.org/es/latin-america-caribbean/andes/venezuela/winds-change-venezuela-chavismo-faces-greatest-electoral-test