@book { KrpersprachederKinder,
    title = "Körpersprache der Kinder",
    author = "Christiane {Bittorf}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638257510",
    url = "https://www.hausarbeiten.de/document/22402"
}