@book { LittleChristmasBall,
    title = "Little Christmas Ball",
    author = "M.L. {Busch} and Karin {Bell} and Talina {Leandro}",
    year = "2021",
    publisher = "booksnacks",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/1151223"
}