Não informado. (1926). Bulletin of business research. Ohio State University, Bureau of Business Research.
Citace podle Chicago (17th ed.)Não informado. Bulletin of Business Research. Columbus, Ohio: Ohio State University, Bureau of Business Research, 1926.
Citace podle MLA (8th ed.)Não informado. Bulletin of Business Research. Ohio State University, Bureau of Business Research, 1926.
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