@book { FIFAFrauenfuballWM2011,
    title = "FIFA Frauenfußball-WM 2011",
    author = "Sarah {Schäfer}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842803961",
    url = "https://m.diplom.de/document/228023"
}