@book { EinAnwaltuntermWeihnachtsbaum,
    title = "Ein Anwalt unterm Weihnachtsbaum",
    author = "Marina {Schuster}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1365644"
}