@book { HolidaysandcustomsintheUnitedStateseineInternetUmterrichtseinheitinderHauptschule,
    title = "Holidays and customs in the United States - eine Internet-Umterrichtseinheit in der Hauptschule",
    author = "Nicole {Theemann}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640015740",
    url = "https://www.hausarbeiten.de/document/103195"
}