Não informado. (1948). FAO Agricultural Studies. Food and Agriculture Organization of the United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. FAO Agricultural Studies. New York: Food and Agriculture Organization of the United Nations, 1948.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. FAO Agricultural Studies. Food and Agriculture Organization of the United Nations, 1948.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.