Não informado. (2000). Report of the Secretary of Agriculture. U.S. Department of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the Secretary of Agriculture. Washington: U.S. Department of Agriculture, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the Secretary of Agriculture. U.S. Department of Agriculture, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.