@book { Spionesterbenlautlos,
    title = "Spione sterben lautlos",
    author = "Hans-Jürgen {Raben}",
    year = "2022",
    publisher = "Bärenklau Exklusiv",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1285435"
}