Não informado. (1967). MSU business topics. Michigan State University, Bureau of Business and Economic Research.
Citace podle Chicago (17th ed.)Não informado. MSU Business Topics. East Lansing, Mich: Michigan State University, Bureau of Business and Economic Research, 1967.
Citace podle MLA (8th ed.)Não informado. MSU Business Topics. Michigan State University, Bureau of Business and Economic Research, 1967.
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