@book { NewYorkAmulticulturalsocietyUnterrichtsreihezumThema,
    title = "New York - A multicultural society (Unterrichtsreihe zum Thema)",
    author = "",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638171977",
    url = "https://www.hausarbeiten.de/document/10892"
}