Não informado. (1937). Fats and oils situation. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Citação do estilo Chicago (17ª ed.)Não informado. Fats and Oils Situation. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1937.
Citação MLA (8ª ed.)Não informado. Fats and Oils Situation. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1937.
Atenció: Aquestes cites poden no estar 100% correctes.