Keller, G., & Warrack, B. (1999). Statistical for management and economics (Abbreviated 4th ed.). Duxbury Press.
Citace podle Chicago (17th ed.)Keller, Gerald, a Brian Warrack. Statistical for Management and Economics. Abbreviated 4th ed. Pacific Grove, CA: Duxbury Press, 1999.
Citace podle MLA (9th ed.)Keller, Gerald, a Brian Warrack. Statistical for Management and Economics. Abbreviated 4th ed. Duxbury Press, 1999.
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