University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. (1925). The method of analyzing business data. University of Illinois.
Lua i Stíl Chicago (17ú heag.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. The Method of Analyzing Business Data. Urbana: University of Illinois, 1925.
Lua MLA (8ú heag.)University of Illinois (Urbana-Champaign campus). Bureau of Economic and Business Research. The Method of Analyzing Business Data. University of Illinois, 1925.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.