Citazione Stile APA (7a Edizione)

Keller, G., & Warrack, B. (1997). Statistics for management and economics (4a. ed.). International Thomson.

Citazione stile Chigago Style (17a edizione)

Keller, Gerald, e Brian Warrack. Statistics for Management and Economics. 4a. ed. Belmont: International Thomson, 1997.

Citatione MLA (9a ed.)

Keller, Gerald, e Brian Warrack. Statistics for Management and Economics. 4a. ed. International Thomson, 1997.