University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. (1925). The method of analyzing business data. University of Illinois.
Παραπομπή σε μορφή Chicago (17η εκδ.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. The Method of Analyzing Business Data. Urbana: University of Illinois, 1925.
Παραπομπή σε μορφή MLA (8th εκδ.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. The Method of Analyzing Business Data. University of Illinois, 1925.
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