@book { AnnasBefreiungskrieg,
    title = "Annas Befreiungskrieg",
    author = "Truxi {Knierim} and Kathrin {Brückmann}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1158141"
}