@book { MathildaunddesKaisersneueKleider,
    title = "Mathilda und des Kaisers neue Kleider",
    author = "Yvonne {Beetz}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1010292"
}