@book { RowanKampfgegendieDrachen,
    title = "Rowan - Kampf gegen die Drachen",
    author = "Aileen {O'Grian}",
    year = "2016",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1135164"
}