https://www.wonderfulmontessori.com/
https://www.redbubble.com/es/shop/montessori+stickers
https://af.3lib.net/s/Montessori%20/?e=1&order=filesize
www.montessoridecancun.com/playadelcarmen/author/tita/page/3/
https://archive.org/details/isbn_9786071102607/page/n15/mode/2up?view=theater
https://es.scribd.com/document/474039030/SIGMUND-FREUD-APOYA-AL-METODO-MONTESSORI