@book { RausausdernarzisstischenBeziehung,
    title = "Raus aus der narzisstischen Beziehung",
    author = "Katja {Demming}",
    year = "2021",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1108908"
}