Não informado. (1978). National food review. U.S. Department of Agriculture, National Economics Division.
Citação do estilo Chicago (17ª ed.)Não informado. National Food Review. Washington: U.S. Department of Agriculture, National Economics Division, 1978.
Citação MLA (8ª ed.)Não informado. National Food Review. U.S. Department of Agriculture, National Economics Division, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
