@book { DertoteKumpel,
    title = "Der tote Kumpel",
    subtitle = "Ein Fall für die Pastorin: Martha Gerlach Band 3",
    author = "Anne-Kathrin {Koppetsch}",
    year = "2021",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1037799"
}