University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. (1930). A test analysis of unsuccessful industrial companies. University of Illinois.
Citace podle Chicago (17th ed.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. A Test Analysis of Unsuccessful Industrial Companies. Urbana: University of Illinois, 1930.
Citace podle MLA (8th ed.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. A Test Analysis of Unsuccessful Industrial Companies. University of Illinois, 1930.
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