@book { AktivierungenfrBettlgerige,
    title = "Aktivierungen für Bettlägerige",
    author = "Gabriele {Schweller}",
    year = "2020",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/544374"
}