@book { DieschwarzeFledermaus26DieKillerausdemUBoot,
    title = "Die schwarze Fledermaus 26: Die Killer aus dem U-Boot",
    author = "G. W. {Jones}",
    year = "2020",
    publisher = "Blitz-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1020732"
}