@book { DieLebernatrlichreinigen,
    title = "Die Leber natürlich reinigen",
    author = "Anne {Wanitschek} and Sebastian {Vigl}",
    year = "2020",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/535276"
}