Organisation for Economic Co-operation and Development, Statistical Office of the European Communities, & ProQuest (Firm). (2010). OECD statistics on international trade in services (2009 ed.). OCDE.
Chicago-čujuhus (17. p.)Organisation for Economic Co-operation and Development, Statistical Office of the European Communities, juo ProQuest (Firm). OECD Statistics on International Trade in Services. 2009 ed. Paris: OCDE, 2010.
MLA-čujuhus (9. p.)Organisation for Economic Co-operation and Development, et al. OECD Statistics on International Trade in Services. 2009 ed. OCDE, 2010.
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