Não informado. (1998). FAO Production Yearbook. Food and Agriculture Organization of the United Nations.
Citação do estilo Chicago (17ª ed.)Não informado. FAO Production Yearbook. Rome: Food and Agriculture Organization of the United Nations, 1998.
Citação MLA (8ª ed.)Não informado. FAO Production Yearbook. Food and Agriculture Organization of the United Nations, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.