@book { BildungsungerechtigkeitinDeutschland,
    title = "Bildungs(un)gerechtigkeit in Deutschland",
    author = "Sabrina {Wolfframm}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640329731",
    url = "https://www.hausarbeiten.de/document/126886"
}