@book { DieNAFTANorthAmericanFreeTradeAgreement,
    title = "Die NAFTA. North American Free Trade Agreement",
    author = "Oliver {Thomas}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638586337",
    url = "https://www.hausarbeiten.de/document/67534"
}