@book { DieMaskenpflichtdesWeihnachtsmannes,
    title = "Die Maskenpflicht des Weihnachtsmannes",
    author = "Rega {Kerner}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1393768"
}