@book { EinSommerinDuntanHall,
    title = "Ein Sommer in Duntan Hall",
    author = "Mary {Sheepshanks} and Erna {Tom}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/974654"
}