@book { DieReformpdagogischeBewegungimFocusMariaMontessori,
    title = "Die Reformpädagogische Bewegung; im Focus Maria Montessori",
    author = "Katy {Voigt}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640090938",
    url = "https://www.hausarbeiten.de/document/110979"
}