Food and Agriculture Organization of the United Nations. Agriculture Division. An annual review of world production and consumption of fertilizers. s.n.
Chicago-referens (17:e uppl.)Food and Agriculture Organization of the United Nations. Agriculture Division. An Annual Review of World Production and Consumption of Fertilizers. Rome: s.n.
MLA-referens (9:e uppl.)Food and Agriculture Organization of the United Nations. Agriculture Division. An Annual Review of World Production and Consumption of Fertilizers. s.n.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.