@book { DieUrsprungsregelnimNAFTAAbkommen,
    title = "Die Ursprungsregeln im NAFTA-Abkommen",
    author = "Arpád {de Gaál Gyulai}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091615"
}