@book { KurzgeschichtenfrKinderundErwachseneNr1,
    title = "Kurzgeschichten für Kinder und Erwachsene Nr. 1",
    author = "Mario {Otto}",
    year = "2018",
    publisher = "Mario Otto-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1021707"
}