Organisation for Economic Co-operation and Development. (1986). OECD economic surveys: Belgium-Luxembourg. Organisation for Economic Co-Operation and Development.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Organisation for Economic Co-operation and Development. OECD Economic Surveys: Belgium-Luxembourg. Paris, France: Organisation for Economic Co-Operation and Development, 1986.
MLA -ийн эшлэл (9 дэх хэвлэлт)Organisation for Economic Co-operation and Development. OECD Economic Surveys: Belgium-Luxembourg. Organisation for Economic Co-Operation and Development, 1986.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.