http://hmics.org/sites/default/files/publications/HMICS20170621PUB.pdf
https://e.issuu.com/anonymous-embed.html?u=newworldwealth&d=gwmr_2019
https://insightcrime.org/es/noticias/pandillas-narcos-vertice-males-tapachula-mexico/
http://HTTPS://WWW.WHITEHOUSE.GOV/WP-CONTENT/UPLOADS/2017/12/NSS-FINAL-12-18-2017-0905-2.PDF