@book { DerdunkleTagEinFallfrWandaMallory4,
    title = "Der dunkle Tag: Ein Fall für Wanda Mallory 4",
    author = "Valerie {Frankel} and Carmen {von Samson-Himmelstjerna}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1023416"
}