@book { MysteryDiariesErsterRomanSchattenherz,
    title = "Mystery Diaries - Erster Roman: Schattenherz",
    subtitle = "Roman",
    author = "Xenia {Jungwirth}",
    year = "2015",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/302158"
}