Não informado. (1978). National food review. U.S. Department of Agriculture, National Economics Division.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. National Food Review. Washington: U.S. Department of Agriculture, National Economics Division, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. National Food Review. U.S. Department of Agriculture, National Economics Division, 1978.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.