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Lua i Stíl Chicago (17ú heag.).Bowerman, Bruce L., Richard T. .O'Connell, Michael L. .Hand, agus Bruce L. .Bowerman. Business Statistics in Practice. 2th ed. Boston: McGraw-Hill Irwin, 2001.
Lua MLA (9ú heag.).Bowerman, Bruce L., et al. Business Statistics in Practice. 2th ed. McGraw-Hill Irwin, 2001.
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