United Nations Economic Commission for Europe & Food and agriculture organization of the united nations. (1998). Forest products prices 1995-1997. Prix des produits forestiers 1995 - 1997: Timber Bulletin. Bulletien du bois. Vol. LI (1998) , No 1.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումUnited Nations Economic Commission for Europe and Food and agriculture organization of the united nations. Forest Products Prices 1995-1997. Prix Des Produits Forestiers 1995 - 1997: Timber Bulletin. Bulletien Du Bois. Vol. LI (1998) , No 1. 1998.
MLA (9րդ խմբ.) ՄեջբերումUnited Nations Economic Commission for Europe and Food and agriculture organization of the united nations. Forest Products Prices 1995-1997. Prix Des Produits Forestiers 1995 - 1997: Timber Bulletin. Bulletien Du Bois. Vol. LI (1998) , No 1. 1998.