@book { EinfastperfekterWinterinStAgnes,
    title = "Ein fast perfekter Winter in St. Agnes",
    author = "Bettina {Reiter}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1421559"
}