APA
(1979). Poplars and willows in wood production and land use. Rome: Food and Agriculture Organization of the United Nations.
Chicago
1979. Poplars and willows in wood production and land use. Rome: Food and Agriculture Organization of the United Nations.
Harvard
(1979). Poplars and willows in wood production and land use. Rome: Food and Agriculture Organization of the United Nations.
MLA
Poplars and willows in wood production and land use. Rome: Food and Agriculture Organization of the United Nations. 1979.