APA-ийн эшлэл(7 дахь хэвлэлт)
Organisation for Economic Co-operation and Development. (2001). Environmental goods and services: The benefits of further global trade liberalisation. OECD.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Organisation for Economic Co-operation and Development. Environmental Goods and Services: The Benefits of Further Global Trade Liberalisation. Paris, France: OECD, 2001.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Organisation for Economic Co-operation and Development. Environmental Goods and Services: The Benefits of Further Global Trade Liberalisation. OECD, 2001.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.