Neiswanger, W. A., & Haworth, F. B. (1950). Laboratory manual for elementary statistical methods as applied to business and economic data (Rev. ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Neiswanger, William Addison, agus Floyd Balch Haworth. Laboratory Manual for Elementary Statistical Methods as Applied to Business and Economic Data. Rev. ed. New York: Macmillan, 1950.
Lua MLA (9ú heag.)Neiswanger, William Addison, agus Floyd Balch Haworth. Laboratory Manual for Elementary Statistical Methods as Applied to Business and Economic Data. Rev. ed. Macmillan, 1950.
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