@book { EinSommerinCheltenham,
    title = "Ein Sommer in Cheltenham",
    author = "Zoë {Barnes} and Ulrike {Ostrop} and Joachim {Peters}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1160287"
}