@book { GesundmitHanfCBD,
    title = "Gesund mit Hanf & CBD",
    author = "Patricia Sonja {Purker}",
    year = "2021",
    publisher = "facultas / maudrich",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/1025665"
}