http://www.biography.com/people/maria-montessori-9412528?page=1

http://www.prweb.com/releases/2004/08/prweb146051.htm

http://beginningsmontessori.com/the-montessori-philosophy/

http://www.nndb.com/people/189/000108862/

http://montessori.org.au/montessori/biography.htm

http://www.montessorieducationuk.org/?q=who-was-maria-montessori/maria-montessoris-time-line/maria-montessori-time-line