@book { DieTempelritterSagaBand21DasGeheimnisderSchriften,
    title = "Die Tempelritter-Saga - Band 21: Das Geheimnis der Schriften",
    author = "Hanns {Kneifel}",
    year = "2016",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/335511"
}