@book { DasHerzdesHighlanders,
    title = "Das Herz des Highlanders",
    subtitle = "Roman",
    author = "Hannah {Howell} and Angela {Schumitz} and Heinz {Tophinke}",
    year = "2019",
    publisher = "venusbooks",
    address = "München, Deutschland",
    url = "https://www.venusbooks.de/document/505409"
}