Não informado. (1961). FAO commodity review and outlook. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Commodity Review and Outlook. Rome: Food and Agriculture Organization of the United Nations, 1961.
MLA-referens (8:e uppl.)Não informado. FAO Commodity Review and Outlook. Food and Agriculture Organization of the United Nations, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.