@book { Der3in1HeilpflanzenRatgeber,
    title = "Der 3 in 1 Heilpflanzen Ratgeber",
    author = "Liselotte {Manner}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1316703"
}