@book { GefangeninderAlbtraumwelt,
    title = "Gefangen in der Albtraumwelt",
    author = "Frank {Rehfeld}",
    year = "2018",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/428669"
}