@book { MiteinanderdurchdieGrundschulzeit,
    title = "Miteinander durch die Grundschulzeit",
    author = "Inke {Hummel}",
    year = "2023",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1390748"
}