https://www.google.com/search?q=BUZAN+MIND+MAPS&client=ubuntu&hs=o1B&channel=fs&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8n-XKtrrgAhUSBGMBHV8JAUAQ_AUIDigB&biw=1235&bih=617
https://hipertextual.com/2016/10/notas-cornell
https://es.wikipedia.org/wiki/Notas_Cornell
https://www.youtube.com/watch?v=jjqA_fdRUEc