@book { 150KurzgeschichtenfrKinderundErwachsene,
    title = "150 Kurzgeschichten - für Kinder und Erwachsene",
    author = "Mario {Otto}",
    year = "2021",
    publisher = "Mario Otto-Verlag, Düsseldorf",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1022874"
}