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.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Organisation for Economic Co-operation and Development, Statistical Office of the European Communities, ба ProQuest (Firm). OECD Statistics on International Trade in Services. 2009 ed. Paris: OCDE, 2010.
MLA -ийн эшлэл (9 дэх хэвлэлт)Organisation for Economic Co-operation and Development, et al. OECD Statistics on International Trade in Services. 2009 ed. OCDE, 2010.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.