Dyfyniad APA

International Monetary Fund. Statistics Dept. (1987). Direction of Trade Statistics Yearbook, 1987 Edition. International Monetary Fund.

Dyfyniad Arddull Chicago

International Monetary Fund. Statistics Dept. Direction of Trade Statistics Yearbook, 1987 Edition. Washington, D.C.: International Monetary Fund, 1987.

Dyfyniad MLA

International Monetary Fund. Statistics Dept. Direction of Trade Statistics Yearbook, 1987 Edition. International Monetary Fund, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.