O'Donnell, M. (2007). Maria Montessori. Continuum.
Chicago Style (17th ed.) CitationO'Donnell, Marion. Maria Montessori. London [u.a.]: Continuum, 2007.
MLA (9th ed.) CitationO'Donnell, Marion. Maria Montessori. Continuum, 2007.
Warning: These citations may not always be 100% accurate.