@book { DreiAlfredBekkerThriller,
    title = "Drei Alfred Bekker Thriller",
    subtitle = "Tod in Tanger/Blumen auf das Grab/Der Killer und sein Zeuge",
    author = "Alfred {Bekker}",
    year = "2019",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/317417"
}