@book { ImTalderGigantenOperationNautilusVierterRoman,
    title = "Im Tal der Giganten: Operation Nautilus - Vierter Roman",
    author = "Wolfgang {Hohlbein}",
    year = "2018",
    publisher = "jumpbooks",
    address = "München, Deutschland",
    url = "https://m.jumpbooks.de/document/429503"
}