Não informado. (2018). Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Outlook for U.S. Agricultural Exports. Washington: U.S. Department of Agriculture, Economic Research Service, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.