United Nations Economic Commission for Europe & Food and agriculture organization of the united nations. (1999). Forest products trade flow data 1996-1997: Statistiques des courants commerciaux des produits forestiers 1996-1997 : . Vol. LI ( 1998 ), No 5.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United Nations Economic Commission for Europe và Food and agriculture organization of the united nations. Forest Products Trade Flow Data 1996-1997: Statistiques Des Courants Commerciaux Des Produits Forestiers 1996-1997 : . Vol. LI ( 1998 ), No 5. 1999.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)United Nations Economic Commission for Europe và Food and agriculture organization of the united nations. Forest Products Trade Flow Data 1996-1997: Statistiques Des Courants Commerciaux Des Produits Forestiers 1996-1997 : . Vol. LI ( 1998 ), No 5. 1999.