@book { MultikulturalismusundMigrationzuBeginndes21Jahrhunderts,
    title = "Multikulturalismus und Migration zu Beginn des 21. Jahrhunderts",
    author = "Helmut {Tomitz}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/227780"
}