Lua APA (7ú heag.)

Organisation for Economic Co-operation and Development. (2018). OECD statistics on international trade in services. OECD Publishing.

Lua i Stíl Chicago (17ú heag.)

Organisation for Economic Co-operation and Development. OECD Statistics on International Trade in Services. Paris: OECD Publishing, 2018.

Lua MLA (9ú heag.)

Organisation for Economic Co-operation and Development. OECD Statistics on International Trade in Services. OECD Publishing, 2018.

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