World Trade Organization. Secretariat. (2000). Guide to the GATS: An overview of issues for further liberalization of trade in services. Kluwer Law International.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Trade Organization. Secretariat. Guide to the GATS: An Overview of Issues for Further Liberalization of Trade in Services. Boston, Mass: Kluwer Law International, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Trade Organization. Secretariat. Guide to the GATS: An Overview of Issues for Further Liberalization of Trade in Services. Kluwer Law International, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.