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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Economic Commission for Europe और 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations Economic Commission for Europe और 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.