Keller, G., Bartel, H., & Warrack, B. (1994). Statistics for management and Economics (3rd. ed.). Duxbury.
Citazione stile Chigago Style (17a edizione)Keller, Gerald, Henry Bartel, e Brian Warrack. Statistics for Management and Economics. 3rd. ed. Belmont: Duxbury, 1994.
Citatione MLA (9a ed.)Keller, Gerald, et al. Statistics for Management and Economics. 3rd. ed. Duxbury, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.