@book { EinfastperfekterSommerinStAgnes,
    title = "Ein fast perfekter Sommer in St. Agnes",
    author = "Bettina {Reiter}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1420805"
}