@book { IchmussindieSchule,
    title = "Ich muss in die Schule!",
    subtitle = "Geschichten aus der Welt der Demenz",
    author = "Martina {Rühl}",
    year = "2012",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403759"
}