@book { PatriciaVanhelsingDasSpukhaus,
    title = "Patricia Vanhelsing - Das Spukhaus",
    author = "Alfred {Bekker} and Sidney {Gardner}",
    year = "2019",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/502361"
}