Não informado. (1937). Fats and oils situation. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Fats and Oils Situation. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1937.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Fats and Oils Situation. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1937.
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