Organisation for Economic Co-operation and Development. (2018). OECD statistics on international trade in services. OECD Publishing.
Cita Chicago (17th ed.)Organisation for Economic Co-operation and Development. OECD Statistics on International Trade in Services. Paris: OECD Publishing, 2018.
Cita MLA (9th ed.)Organisation for Economic Co-operation and Development. OECD Statistics on International Trade in Services. OECD Publishing, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.