Keller, G., Bartel, H., & Warrack, B. (1994). Statistics for management and Economics (3rd. ed.). Duxbury.
Čikaški stil citiranja (17. izdanje)Keller, Gerald, Henry Bartel, i Brian Warrack. Statistics for Management and Economics. 3rd. ed. Belmont: Duxbury, 1994.
MLA način citiranja (9. izdanje)Keller, Gerald, et al. Statistics for Management and Economics. 3rd. ed. Duxbury, 1994.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.