@book { VertraudirnichtPsychothriller,
    title = "Vertrau dir (nicht): Psychothriller",
    author = "Chris {Karlden}",
    year = "2020",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1001614"
}