Organisation for Economic Co-operation and Development, Statistical Office of the European Communities, & ProQuest (Firm). (2009). OECD statistics on international trade in services: Statistiques de l'OCDE sur les echanges internationaux de services.1999-2007. Tableaux detailles par categories de services. Organisation for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development, Statistical Office of the European Communities, و ProQuest (Firm). OECD Statistics on International Trade in Services: Statistiques De L'OCDE Sur Les Echanges Internationaux De Services.1999-2007. Tableaux Detailles Par Categories De Services. Paris, France: Organisation for Economic Co-operation and Development, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development, et al. OECD Statistics on International Trade in Services: Statistiques De L'OCDE Sur Les Echanges Internationaux De Services.1999-2007. Tableaux Detailles Par Categories De Services. Organisation for Economic Co-operation and Development, 2009.