Não informado. (1949). FAO Development Paper on Agriculture. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Development Paper on Agriculture. Rome: Food and Agriculture Organization of the United Nations, 1949.
MLA-referens (8:e uppl.)Não informado. FAO Development Paper on Agriculture. Food and Agriculture Organization of the United Nations, 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.