http://www.c-span.org/video/?33133-1/us-foreign-policy-toward-latin-america
http://www.cfr.org/mexico/us-latin-america-relations/p16279
http://study.com/academy/lesson/american-imperialism-in-latin-america-the-caribbean.html
http://www.woodville.org/documentos/130506latinamericanhistory-summary.pdf