Não informado. (1961). FAO commodity review. Food and Agriculture Organization of the United Nations.
Chicago-Zitierstil (17. Ausg.)Não informado. FAO Commodity Review. Rome: Food and Agriculture Organization of the United Nations, 1961.
MLA-Zitierstil (8. Ausg.)Não informado. FAO Commodity Review. Food and Agriculture Organization of the United Nations, 1961.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.