@book { DasGeheimnisderKastanienvilla,
    title = "Das Geheimnis der Kastanienvilla",
    subtitle = "Roman",
    author = "Jane Elizabeth {Varley} and Theresia {Übelhör}",
    year = "2021",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/588187"
}