Não informado. (1998). FAO Production Yearbook. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Production Yearbook. Rome: Food and Agriculture Organization of the United Nations, 1998.
MLA-referens (8:e uppl.)Não informado. FAO Production Yearbook. Food and Agriculture Organization of the United Nations, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.