@book { DirectEffectofWTOAgreementsPracticesandArguments,
    title = "Direct Effect of WTO Agreements: Practices and Arguments",
    author = "Chingwen {Hsueh}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108390"
}