Keller, G. (2018). Statistics for management and economics (Onceava edición.). Cengage Learning.
Čikaški stil citiranja (17. izdanje)Keller, Gerald. Statistics for Management and Economics. Onceava edición. Boston: Cengage Learning, 2018.
MLA način citiranja (8. izdanje)Keller, Gerald. Statistics for Management and Economics. Onceava edición. Cengage Learning, 2018.
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