Não informado. (1963). Foreign agriculture, including foreign crops and markets. U.S. Department of Agriculture, Foreign Agricultural Service.
Citação do estilo Chicago (17ª ed.)Não informado. Foreign Agriculture, Including Foreign Crops and Markets. Washington: U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
Citação MLA (8ª ed.)Não informado. Foreign Agriculture, Including Foreign Crops and Markets. U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.