International Monetary Fund. Real Sector Division & ProQuest (Firm). (1993). A Guide to Direction of trade statistics. International Monetary Fund.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)International Monetary Fund. Real Sector Division ба ProQuest (Firm). A Guide to Direction of Trade Statistics. Washington, D.C.: International Monetary Fund, 1993.
MLA -ийн эшлэл (9 дэх хэвлэлт)International Monetary Fund. Real Sector Division ба ProQuest (Firm). A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.