Não informado. (1952). Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics.
Citace podle Chicago (17th ed.)Não informado. Marketing Research Report. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
Citace podle MLA (8th ed.)Não informado. Marketing Research Report. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1952.
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