@book { WieTiereunsheilen,
    title = "Wie Tiere uns heilen",
    author = "Dr. Angela {Fetzner} and  {AchielVerlag}",
    year = "2023",
    publisher = "AchielVerlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1353492"
}