@book { GilbertderkleineZeitgeist,
    title = "Gilbert, der kleine Zeitgeist",
    author = "Eva {Prinz}",
    year = "2023",
    publisher = "Papierfresserchens MTM-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1421825"
}