@book { DerToteimKarpfenteich,
    title = "Der Tote im Karpfenteich",
    author = "Peter {Haberl} and Pete {Hackett}",
    year = "2019",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/306681"
}