http://analia-educatic.blogspot.com/2007/09/la-era-de-la-imagen.html

www.3erasimagen.net#cuadro

http://books.google.com.ec/books?hl=es&lr=&id=UN-mROr-XPwC&oi=fnd&pg=PA5&dq=la+era+de+la+imagen+w+j+t+mitchell&ots=X5WDuiK2_u&sig=KGEa9KjpvtzEUoWV6oANQBoYuks#v=onepage&q=la%20era%20de%20la%20imagen%20w%20j%20t%20mitchell&f=false