@book { Schuleingangsdiagnostik,
    title = "Schuleingangsdiagnostik",
    author = "David {Liebelt}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640286560",
    url = "https://www.hausarbeiten.de/document/123521"
}