@book { Hotel13Band2DasRtselderZeitmaschine,
    title = "Hotel 13 - Band 2: Das Rätsel der Zeitmaschine",
    author = " {Hotel 13}",
    year = "2016",
    publisher = "jumpbooks",
    address = "München, Deutschland",
    url = "https://m.jumpbooks.de/document/320606"
}