BOWERMAN, B. L., & O'CONNELL, R. T. (2012). Essentilas of business statistics. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)BOWERMAN, Bruce L., agus Richard T. O'CONNELL. Essentilas of Business Statistics. McGraw-Hill Book Company, 2012.
Lua MLA (9ú heag.)BOWERMAN, Bruce L., agus Richard T. O'CONNELL. Essentilas of Business Statistics. McGraw-Hill Book Company, 2012.
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