http://www.marketingdirecto.com/actualidad/marketing/25-soberbias-presentaciones-en-slideshare-que-no- debe-perder-de-vista-si-se-dedica-al-marketing/

http://www.slideshare.net/MarkJohnstone2/how-toproducebettercontentideasmarkjohnstone

http://www.slideshare.net/ericschmidt/how-google-works-final-1

http://www.slideshare.net/randfish/why-content-marketing-fails