@book { Sportpdagogik,
    title = "Sportpädagogik",
    subtitle = "Ein sozialpädagogischer Ansatz in der offenen Jugendarbeit",
    author = "Mario {Fabianek}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832418588",
    url = "https://m.diplom.de/document/217709"
}