@book { DerRauhnachtbegleiter,
    title = "Der Rauhnachtbegleiter",
    author = "Dr. Angela {Fetzner} and  {AchielVerlag}",
    year = "2022",
    publisher = "AchielVerlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1296738"
}