Não informado. (1991). Food, Nutrition and Agriculture. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. Food, Nutrition and Agriculture. Roma: Food and Agriculture Organization of the United Nations, 1991.
MLA-referens (8:e uppl.)Não informado. Food, Nutrition and Agriculture. Food and Agriculture Organization of the United Nations, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.