@book { FruleinElsaundderTodderErzieherin,
    title = "Fräulein Elsa und der Tod der Erzieherin",
    author = "Maria {Appenzeller}",
    year = "2019",
    publisher = "booksnacks",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/469420"
}