@book { BegleitheftzurOstkstenReihe,
    title = "Begleitheft zur Ostküsten-Reihe",
    author = "Mathilda {Grace}",
    year = "2015",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/994625"
}