@book { ZuJungenimKindergartenvonMargareteBlankMathieu,
    title = "Zu Jungen im Kindergarten von Margarete Blank-Mathieu",
    author = "Jessica {Eichenauer}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/276101"
}