@book { StarkeMdchenbrauchenentspannteEltern,
    title = "Starke Mädchen brauchen entspannte Eltern",
    author = "Dr. med. Judith {Bildau}",
    year = "2020",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/533804"
}