Não informado. (1963). Foreign agriculture, including foreign crops and markets. U.S. Department of Agriculture, Foreign Agricultural Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Foreign Agriculture, Including Foreign Crops and Markets. Washington: U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Foreign Agriculture, Including Foreign Crops and Markets. U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.