@book { DieschwarzeFledermaus23DieMordederNaziSpione,
    title = "Die schwarze Fledermaus 23: Die Morde der Nazi-Spione",
    author = "G. W. {Jones}",
    year = "2020",
    publisher = "Blitz-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1020755"
}