Não informado. (1947). State of food and agriculture. Food and Agriculture Organization of the United Nations.
Citação do estilo Chicago (17ª ed.)Não informado. State of Food and Agriculture. Rome: Food and Agriculture Organization of the United Nations, 1947.
Citação MLA (8ª ed.)Não informado. State of Food and Agriculture. Food and Agriculture Organization of the United Nations, 1947.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.