Enlace:https://web.archive.org/web/*/http://cmm.cenart.gob.mx/publicaciones/muestra2008/ensayo_marco.pdf#
WaybackMachine:https://web.archive.org/web/*/https://web.archive.org/web/*/http://cmm.cenart.gob.mx/publicaciones/muestra2008/ensayo_marco.pdf# [[Categoría:Marco Ramírez]